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Finding the Fourth Proportional to 72,115.50, 99,454.74 and 60,055.92

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Solution

The fourth proportional to 72,115.50, 99,454.74 and 60,055.92 is: 82,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.50 : 99,454.74 = 60,055.92 : x
  2. Step 2: Convert to fraction form
    72,115.50/99,454.74 = 60,055.92/x
  3. Step 3: Cross multiply
    72,115.50x = 99,454.74 × 60,055.92
  4. Step 4: Simplify right side
    72,115.50x = 5,972,845,909.06
  5. Step 5: Solve for x
    x = 5,972,845,909.06/72,115.50
  6. Step 6: Final answer
    x = 82,823.33

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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.