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Finding the Fourth Proportional to 96,777.80, 145,166.70 and 61,348.40

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Solution

The fourth proportional to 96,777.80, 145,166.70 and 61,348.40 is: 92,022.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,777.80 : 145,166.70 = 61,348.40 : x
  2. Step 2: Convert to fraction form
    96,777.80/145,166.70 = 61,348.40/x
  3. Step 3: Cross multiply
    96,777.80x = 145,166.70 × 61,348.40
  4. Step 4: Simplify right side
    96,777.80x = 8,905,744,778.28
  5. Step 5: Solve for x
    x = 8,905,744,778.28/96,777.80
  6. Step 6: Final answer
    x = 92,022.60

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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.