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Finding the Fourth Proportional to 127,458.56, 191,279.52 and 47,507.52

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Solution

The fourth proportional to 127,458.56, 191,279.52 and 47,507.52 is: 71,295.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,458.56 : 191,279.52 = 47,507.52 : x
  2. Step 2: Convert to fraction form
    127,458.56/191,279.52 = 47,507.52/x
  3. Step 3: Cross multiply
    127,458.56x = 191,279.52 × 47,507.52
  4. Step 4: Simplify right side
    127,458.56x = 9,087,215,621.99
  5. Step 5: Solve for x
    x = 9,087,215,621.99/127,458.56
  6. Step 6: Final answer
    x = 71,295.45

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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.