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Finding the Fourth Proportional to 57,318.48, 85,978.35 and 17,337.87

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Solution

The fourth proportional to 57,318.48, 85,978.35 and 17,337.87 is: 26,007.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,318.48 : 85,978.35 = 17,337.87 : x
  2. Step 2: Convert to fraction form
    57,318.48/85,978.35 = 17,337.87/x
  3. Step 3: Cross multiply
    57,318.48x = 85,978.35 × 17,337.87
  4. Step 4: Simplify right side
    57,318.48x = 1,490,681,455.11
  5. Step 5: Solve for x
    x = 1,490,681,455.11/57,318.48
  6. Step 6: Final answer
    x = 26,007.00

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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.