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Finding the Fourth Proportional to 487,690.55, 731,461.91 and 132,732.23

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Solution

The fourth proportional to 487,690.55, 731,461.91 and 132,732.23 is: 199,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,690.55 : 731,461.91 = 132,732.23 : x
  2. Step 2: Convert to fraction form
    487,690.55/731,461.91 = 132,732.23/x
  3. Step 3: Cross multiply
    487,690.55x = 731,461.91 × 132,732.23
  4. Step 4: Simplify right side
    487,690.55x = 97,088,566,153.39
  5. Step 5: Solve for x
    x = 97,088,566,153.39/487,690.55
  6. Step 6: Final answer
    x = 199,078.22

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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.