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Finding the Fourth Proportional to 61,275.40, 91,913.10 and 34,982.80

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Solution

The fourth proportional to 61,275.40, 91,913.10 and 34,982.80 is: 52,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,275.40 : 91,913.10 = 34,982.80 : x
  2. Step 2: Convert to fraction form
    61,275.40/91,913.10 = 34,982.80/x
  3. Step 3: Cross multiply
    61,275.40x = 91,913.10 × 34,982.80
  4. Step 4: Simplify right side
    61,275.40x = 3,215,377,594.68
  5. Step 5: Solve for x
    x = 3,215,377,594.68/61,275.40
  6. Step 6: Final answer
    x = 52,474.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.