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Finding the Fourth Proportional to 676,778.40, 933,703.20 and 435,194.19

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Solution

The fourth proportional to 676,778.40, 933,703.20 and 435,194.19 is: 600,406.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,778.40 : 933,703.20 = 435,194.19 : x
  2. Step 2: Convert to fraction form
    676,778.40/933,703.20 = 435,194.19/x
  3. Step 3: Cross multiply
    676,778.40x = 933,703.20 × 435,194.19
  4. Step 4: Simplify right side
    676,778.40x = 406,342,207,824.41
  5. Step 5: Solve for x
    x = 406,342,207,824.41/676,778.40
  6. Step 6: Final answer
    x = 600,406.58

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Double scale
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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.