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Finding the Fourth Proportional to 83,862.60, 125,802.10 and 31,259.80

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Solution

The fourth proportional to 83,862.60, 125,802.10 and 31,259.80 is: 46,892.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,862.60 : 125,802.10 = 31,259.80 : x
  2. Step 2: Convert to fraction form
    83,862.60/125,802.10 = 31,259.80/x
  3. Step 3: Cross multiply
    83,862.60x = 125,802.10 × 31,259.80
  4. Step 4: Simplify right side
    83,862.60x = 3,932,548,485.58
  5. Step 5: Solve for x
    x = 3,932,548,485.58/83,862.60
  6. Step 6: Final answer
    x = 46,892.76

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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.