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Finding the Fourth Proportional to 356,532.60, 534,798.90 and 156,640.80

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Solution

The fourth proportional to 356,532.60, 534,798.90 and 156,640.80 is: 234,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,532.60 : 534,798.90 = 156,640.80 : x
  2. Step 2: Convert to fraction form
    356,532.60/534,798.90 = 156,640.80/x
  3. Step 3: Cross multiply
    356,532.60x = 534,798.90 × 156,640.80
  4. Step 4: Simplify right side
    356,532.60x = 83,771,327,535.12
  5. Step 5: Solve for x
    x = 83,771,327,535.12/356,532.60
  6. Step 6: Final answer
    x = 234,961.20

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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.