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Finding the Fourth Proportional to 58,918.86, 88,325.90 and 21,471.88

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Solution

The fourth proportional to 58,918.86, 88,325.90 and 21,471.88 is: 32,188.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,918.86 : 88,325.90 = 21,471.88 : x
  2. Step 2: Convert to fraction form
    58,918.86/88,325.90 = 21,471.88/x
  3. Step 3: Cross multiply
    58,918.86x = 88,325.90 × 21,471.88
  4. Step 4: Simplify right side
    58,918.86x = 1,896,523,125.69
  5. Step 5: Solve for x
    x = 1,896,523,125.69/58,918.86
  6. Step 6: Final answer
    x = 32,188.73

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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.