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Finding the Fourth Proportional to 91,959.96, 126,793.42 and 71,547.96

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Solution

The fourth proportional to 91,959.96, 126,793.42 and 71,547.96 is: 98,649.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,959.96 : 126,793.42 = 71,547.96 : x
  2. Step 2: Convert to fraction form
    91,959.96/126,793.42 = 71,547.96/x
  3. Step 3: Cross multiply
    91,959.96x = 126,793.42 × 71,547.96
  4. Step 4: Simplify right side
    91,959.96x = 9,071,810,542.42
  5. Step 5: Solve for x
    x = 9,071,810,542.42/91,959.96
  6. Step 6: Final answer
    x = 98,649.57

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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.