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Finding the Fourth Proportional to 66,442.56, 99,700.29 and 26,989.08

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Solution

The fourth proportional to 66,442.56, 99,700.29 and 26,989.08 is: 40,498.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,442.56 : 99,700.29 = 26,989.08 : x
  2. Step 2: Convert to fraction form
    66,442.56/99,700.29 = 26,989.08/x
  3. Step 3: Cross multiply
    66,442.56x = 99,700.29 × 26,989.08
  4. Step 4: Simplify right side
    66,442.56x = 2,690,819,102.83
  5. Step 5: Solve for x
    x = 2,690,819,102.83/66,442.56
  6. Step 6: Final answer
    x = 40,498.43

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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.