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Finding the Fourth Proportional to 642,057.67, 963,150.21 and 237,355.92

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Solution

The fourth proportional to 642,057.67, 963,150.21 and 237,355.92 is: 356,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,057.67 : 963,150.21 = 237,355.92 : x
  2. Step 2: Convert to fraction form
    642,057.67/963,150.21 = 237,355.92/x
  3. Step 3: Cross multiply
    642,057.67x = 963,150.21 × 237,355.92
  4. Step 4: Simplify right side
    642,057.67x = 228,609,404,192.74
  5. Step 5: Solve for x
    x = 228,609,404,192.74/642,057.67
  6. Step 6: Final answer
    x = 356,057.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.