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Finding the Fourth Proportional to 665,341.06, 918,170.67 and 363,535.06

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Solution

The fourth proportional to 665,341.06, 918,170.67 and 363,535.06 is: 501,678.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,341.06 : 918,170.67 = 363,535.06 : x
  2. Step 2: Convert to fraction form
    665,341.06/918,170.67 = 363,535.06/x
  3. Step 3: Cross multiply
    665,341.06x = 918,170.67 × 363,535.06
  4. Step 4: Simplify right side
    665,341.06x = 333,787,229,608.69
  5. Step 5: Solve for x
    x = 333,787,229,608.69/665,341.06
  6. Step 6: Final answer
    x = 501,678.39

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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.