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Finding the Fourth Proportional to 141,049.92, 194,642.34 and 77,386.32

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Solution

The fourth proportional to 141,049.92, 194,642.34 and 77,386.32 is: 106,789.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,049.92 : 194,642.34 = 77,386.32 : x
  2. Step 2: Convert to fraction form
    141,049.92/194,642.34 = 77,386.32/x
  3. Step 3: Cross multiply
    141,049.92x = 194,642.34 × 77,386.32
  4. Step 4: Simplify right side
    141,049.92x = 15,062,654,408.79
  5. Step 5: Solve for x
    x = 15,062,654,408.79/141,049.92
  6. Step 6: Final answer
    x = 106,789.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.