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Finding the Fourth Proportional to 110,112.92, 151,963.19 and 61,715.42

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Solution

The fourth proportional to 110,112.92, 151,963.19 and 61,715.42 is: 85,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,112.92 : 151,963.19 = 61,715.42 : x
  2. Step 2: Convert to fraction form
    110,112.92/151,963.19 = 61,715.42/x
  3. Step 3: Cross multiply
    110,112.92x = 151,963.19 × 61,715.42
  4. Step 4: Simplify right side
    110,112.92x = 9,378,471,027.00
  5. Step 5: Solve for x
    x = 9,378,471,027.00/110,112.92
  6. Step 6: Final answer
    x = 85,171.40

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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.