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Finding the Fourth Proportional to 127,661.42, 191,373.03 and 43,363.91

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Solution

The fourth proportional to 127,661.42, 191,373.03 and 43,363.91 is: 65,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,661.42 : 191,373.03 = 43,363.91 : x
  2. Step 2: Convert to fraction form
    127,661.42/191,373.03 = 43,363.91/x
  3. Step 3: Cross multiply
    127,661.42x = 191,373.03 × 43,363.91
  4. Step 4: Simplify right side
    127,661.42x = 8,298,681,892.48
  5. Step 5: Solve for x
    x = 8,298,681,892.48/127,661.42
  6. Step 6: Final answer
    x = 65,005.40

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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.