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Finding the Fourth Proportional to 124,041.70, 185,857.35 and 71,359.30

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Solution

The fourth proportional to 124,041.70, 185,857.35 and 71,359.30 is: 106,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,041.70 : 185,857.35 = 71,359.30 : x
  2. Step 2: Convert to fraction form
    124,041.70/185,857.35 = 71,359.30/x
  3. Step 3: Cross multiply
    124,041.70x = 185,857.35 × 71,359.30
  4. Step 4: Simplify right side
    124,041.70x = 13,262,650,395.86
  5. Step 5: Solve for x
    x = 13,262,650,395.86/124,041.70
  6. Step 6: Final answer
    x = 106,920.90

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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.