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Finding the Fourth Proportional to 57,610.98, 86,423.76 and 28,003.86

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Solution

The fourth proportional to 57,610.98, 86,423.76 and 28,003.86 is: 42,009.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,610.98 : 86,423.76 = 28,003.86 : x
  2. Step 2: Convert to fraction form
    57,610.98/86,423.76 = 28,003.86/x
  3. Step 3: Cross multiply
    57,610.98x = 86,423.76 × 28,003.86
  4. Step 4: Simplify right side
    57,610.98x = 2,420,198,875.71
  5. Step 5: Solve for x
    x = 2,420,198,875.71/57,610.98
  6. Step 6: Final answer
    x = 42,009.33

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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.