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Finding the Fourth Proportional to 137,618.52, 206,403.48 and 62,720.88

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Solution

The fourth proportional to 137,618.52, 206,403.48 and 62,720.88 is: 94,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,618.52 : 206,403.48 = 62,720.88 : x
  2. Step 2: Convert to fraction form
    137,618.52/206,403.48 = 62,720.88/x
  3. Step 3: Cross multiply
    137,618.52x = 206,403.48 × 62,720.88
  4. Step 4: Simplify right side
    137,618.52x = 12,945,807,900.66
  5. Step 5: Solve for x
    x = 12,945,807,900.66/137,618.52
  6. Step 6: Final answer
    x = 94,070.25

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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.