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Finding the Fourth Proportional to 127,524.78, 191,024.60 and 74,807.15

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Solution

The fourth proportional to 127,524.78, 191,024.60 and 74,807.15 is: 112,056.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,524.78 : 191,024.60 = 74,807.15 : x
  2. Step 2: Convert to fraction form
    127,524.78/191,024.60 = 74,807.15/x
  3. Step 3: Cross multiply
    127,524.78x = 191,024.60 × 74,807.15
  4. Step 4: Simplify right side
    127,524.78x = 14,290,004,576.73
  5. Step 5: Solve for x
    x = 14,290,004,576.73/127,524.78
  6. Step 6: Final answer
    x = 112,056.69

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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.