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Finding the Fourth Proportional to 58,115.55, 87,009.30 and 56,475.30

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Solution

The fourth proportional to 58,115.55, 87,009.30 and 56,475.30 is: 84,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,115.55 : 87,009.30 = 56,475.30 : x
  2. Step 2: Convert to fraction form
    58,115.55/87,009.30 = 56,475.30/x
  3. Step 3: Cross multiply
    58,115.55x = 87,009.30 × 56,475.30
  4. Step 4: Simplify right side
    58,115.55x = 4,913,876,320.29
  5. Step 5: Solve for x
    x = 4,913,876,320.29/58,115.55
  6. Step 6: Final answer
    x = 84,553.55

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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.