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Finding the Fourth Proportional to 493,630.56, 740,473.53 and 138,616.90

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Solution

The fourth proportional to 493,630.56, 740,473.53 and 138,616.90 is: 207,933.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,630.56 : 740,473.53 = 138,616.90 : x
  2. Step 2: Convert to fraction form
    493,630.56/740,473.53 = 138,616.90/x
  3. Step 3: Cross multiply
    493,630.56x = 740,473.53 × 138,616.90
  4. Step 4: Simplify right side
    493,630.56x = 102,642,145,260.66
  5. Step 5: Solve for x
    x = 102,642,145,260.66/493,630.56
  6. Step 6: Final answer
    x = 207,933.13

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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.