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Finding the Fourth Proportional to 57,699.92, 86,398.88 and 46,395.20

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Solution

The fourth proportional to 57,699.92, 86,398.88 and 46,395.20 is: 69,471.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,699.92 : 86,398.88 = 46,395.20 : x
  2. Step 2: Convert to fraction form
    57,699.92/86,398.88 = 46,395.20/x
  3. Step 3: Cross multiply
    57,699.92x = 86,398.88 × 46,395.20
  4. Step 4: Simplify right side
    57,699.92x = 4,008,493,317.38
  5. Step 5: Solve for x
    x = 4,008,493,317.38/57,699.92
  6. Step 6: Final answer
    x = 69,471.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.