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Finding the Fourth Proportional to 72,729.68, 100,374.56 and 44,454.24

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Solution

The fourth proportional to 72,729.68, 100,374.56 and 44,454.24 is: 61,351.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,729.68 : 100,374.56 = 44,454.24 : x
  2. Step 2: Convert to fraction form
    72,729.68/100,374.56 = 44,454.24/x
  3. Step 3: Cross multiply
    72,729.68x = 100,374.56 × 44,454.24
  4. Step 4: Simplify right side
    72,729.68x = 4,462,074,780.13
  5. Step 5: Solve for x
    x = 4,462,074,780.13/72,729.68
  6. Step 6: Final answer
    x = 61,351.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.