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Finding the Fourth Proportional to 72,479, 108,718.68 and 44,023.16

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Solution

The fourth proportional to 72,479, 108,718.68 and 44,023.16 is: 66,034.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,479 : 108,718.68 = 44,023.16 : x
  2. Step 2: Convert to fraction form
    72,479/108,718.68 = 44,023.16/x
  3. Step 3: Cross multiply
    72,479x = 108,718.68 × 44,023.16
  4. Step 4: Simplify right side
    72,479x = 4,786,139,844.63
  5. Step 5: Solve for x
    x = 4,786,139,844.63/72,479
  6. Step 6: Final answer
    x = 66,034.85

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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.