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Finding the Fourth Proportional to 86,985.72, 130,500.48 and 24,656.28

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Solution

The fourth proportional to 86,985.72, 130,500.48 and 24,656.28 is: 36,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.72 : 130,500.48 = 24,656.28 : x
  2. Step 2: Convert to fraction form
    86,985.72/130,500.48 = 24,656.28/x
  3. Step 3: Cross multiply
    86,985.72x = 130,500.48 × 24,656.28
  4. Step 4: Simplify right side
    86,985.72x = 3,217,656,375.01
  5. Step 5: Solve for x
    x = 3,217,656,375.01/86,985.72
  6. Step 6: Final answer
    x = 36,990.63

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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.