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Finding the Fourth Proportional to 72,146.80, 99,593.24 and 43,861.52

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Solution

The fourth proportional to 72,146.80, 99,593.24 and 43,861.52 is: 60,547.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,146.80 : 99,593.24 = 43,861.52 : x
  2. Step 2: Convert to fraction form
    72,146.80/99,593.24 = 43,861.52/x
  3. Step 3: Cross multiply
    72,146.80x = 99,593.24 × 43,861.52
  4. Step 4: Simplify right side
    72,146.80x = 4,368,310,888.12
  5. Step 5: Solve for x
    x = 4,368,310,888.12/72,146.80
  6. Step 6: Final answer
    x = 60,547.53

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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.