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Finding the Fourth Proportional to 676,189.69, 933,170.93 and 374,383.69

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Solution

The fourth proportional to 676,189.69, 933,170.93 and 374,383.69 is: 516,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,189.69 : 933,170.93 = 374,383.69 : x
  2. Step 2: Convert to fraction form
    676,189.69/933,170.93 = 374,383.69/x
  3. Step 3: Cross multiply
    676,189.69x = 933,170.93 × 374,383.69
  4. Step 4: Simplify right side
    676,189.69x = 349,363,973,373.23
  5. Step 5: Solve for x
    x = 349,363,973,373.23/676,189.69
  6. Step 6: Final answer
    x = 516,665.63

Related Problems

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Half scale
Find fourth proportional to 1,352,379.38, 1,866,341.86 and 748,767.38
Double scale
Find fourth proportional to 676,190.69, 933,172.31 and 374,384.69
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.