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Finding the Fourth Proportional to 98,543.97, 147,275.94 and 71,945.97

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Solution

The fourth proportional to 98,543.97, 147,275.94 and 71,945.97 is: 107,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,543.97 : 147,275.94 = 71,945.97 : x
  2. Step 2: Convert to fraction form
    98,543.97/147,275.94 = 71,945.97/x
  3. Step 3: Cross multiply
    98,543.97x = 147,275.94 × 71,945.97
  4. Step 4: Simplify right side
    98,543.97x = 10,595,910,360.96
  5. Step 5: Solve for x
    x = 10,595,910,360.96/98,543.97
  6. Step 6: Final answer
    x = 107,524.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.