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Finding the Fourth Proportional to 72,132.80, 99,573.92 and 43,847.52

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Solution

The fourth proportional to 72,132.80, 99,573.92 and 43,847.52 is: 60,528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,132.80 : 99,573.92 = 43,847.52 : x
  2. Step 2: Convert to fraction form
    72,132.80/99,573.92 = 43,847.52/x
  3. Step 3: Cross multiply
    72,132.80x = 99,573.92 × 43,847.52
  4. Step 4: Simplify right side
    72,132.80x = 4,366,069,448.68
  5. Step 5: Solve for x
    x = 4,366,069,448.68/72,132.80
  6. Step 6: Final answer
    x = 60,528.21

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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.