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Finding the Fourth Proportional to 124,695.45, 187,044.12 and 31,201.20

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Solution

The fourth proportional to 124,695.45, 187,044.12 and 31,201.20 is: 46,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,695.45 : 187,044.12 = 31,201.20 : x
  2. Step 2: Convert to fraction form
    124,695.45/187,044.12 = 31,201.20/x
  3. Step 3: Cross multiply
    124,695.45x = 187,044.12 × 31,201.20
  4. Step 4: Simplify right side
    124,695.45x = 5,836,000,996.94
  5. Step 5: Solve for x
    x = 5,836,000,996.94/124,695.45
  6. Step 6: Final answer
    x = 46,802.04

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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.