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Finding the Fourth Proportional to 127,809.90, 191,767.50 and 52,945.11

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Solution

The fourth proportional to 127,809.90, 191,767.50 and 52,945.11 is: 79,439.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,809.90 : 191,767.50 = 52,945.11 : x
  2. Step 2: Convert to fraction form
    127,809.90/191,767.50 = 52,945.11/x
  3. Step 3: Cross multiply
    127,809.90x = 191,767.50 × 52,945.11
  4. Step 4: Simplify right side
    127,809.90x = 10,153,151,381.93
  5. Step 5: Solve for x
    x = 10,153,151,381.93/127,809.90
  6. Step 6: Final answer
    x = 79,439.48

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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.