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Finding the Fourth Proportional to 487,156.60, 730,735.31 and 132,170.66

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Solution

The fourth proportional to 487,156.60, 730,735.31 and 132,170.66 is: 198,256.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,156.60 : 730,735.31 = 132,170.66 : x
  2. Step 2: Convert to fraction form
    487,156.60/730,735.31 = 132,170.66/x
  3. Step 3: Cross multiply
    487,156.60x = 730,735.31 × 132,170.66
  4. Step 4: Simplify right side
    487,156.60x = 96,581,768,208.00
  5. Step 5: Solve for x
    x = 96,581,768,208.00/487,156.60
  6. Step 6: Final answer
    x = 198,256.10

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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.