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Finding the Fourth Proportional to 127,642.72, 192,419.72 and 119,079.40

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Solution

The fourth proportional to 127,642.72, 192,419.72 and 119,079.40 is: 179,510.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,642.72 : 192,419.72 = 119,079.40 : x
  2. Step 2: Convert to fraction form
    127,642.72/192,419.72 = 119,079.40/x
  3. Step 3: Cross multiply
    127,642.72x = 192,419.72 × 119,079.40
  4. Step 4: Simplify right side
    127,642.72x = 22,913,224,805.77
  5. Step 5: Solve for x
    x = 22,913,224,805.77/127,642.72
  6. Step 6: Final answer
    x = 179,510.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.