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Finding the Fourth Proportional to 72,346.68, 99,882.75 and 57,300.12

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Solution

The fourth proportional to 72,346.68, 99,882.75 and 57,300.12 is: 79,109.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,346.68 : 99,882.75 = 57,300.12 : x
  2. Step 2: Convert to fraction form
    72,346.68/99,882.75 = 57,300.12/x
  3. Step 3: Cross multiply
    72,346.68x = 99,882.75 × 57,300.12
  4. Step 4: Simplify right side
    72,346.68x = 5,723,293,560.93
  5. Step 5: Solve for x
    x = 5,723,293,560.93/72,346.68
  6. Step 6: Final answer
    x = 79,109.28

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