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Finding the Fourth Proportional to 127,443.64, 191,153.11 and 38,697.93

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Solution

The fourth proportional to 127,443.64, 191,153.11 and 38,697.93 is: 58,043.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,443.64 : 191,153.11 = 38,697.93 : x
  2. Step 2: Convert to fraction form
    127,443.64/191,153.11 = 38,697.93/x
  3. Step 3: Cross multiply
    127,443.64x = 191,153.11 × 38,697.93
  4. Step 4: Simplify right side
    127,443.64x = 7,397,229,240.55
  5. Step 5: Solve for x
    x = 7,397,229,240.55/127,443.64
  6. Step 6: Final answer
    x = 58,043.14

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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.