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Finding the Fourth Proportional to 127,693.32, 191,475.90 and 74,402.52

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Solution

The fourth proportional to 127,693.32, 191,475.90 and 74,402.52 is: 111,566.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,693.32 : 191,475.90 = 74,402.52 : x
  2. Step 2: Convert to fraction form
    127,693.32/191,475.90 = 74,402.52/x
  3. Step 3: Cross multiply
    127,693.32x = 191,475.90 × 74,402.52
  4. Step 4: Simplify right side
    127,693.32x = 14,246,289,479.27
  5. Step 5: Solve for x
    x = 14,246,289,479.27/127,693.32
  6. Step 6: Final answer
    x = 111,566.44

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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.