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Finding the Fourth Proportional to 73,117.10, 109,675.65 and 61,841.90

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Solution

The fourth proportional to 73,117.10, 109,675.65 and 61,841.90 is: 92,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,117.10 : 109,675.65 = 61,841.90 : x
  2. Step 2: Convert to fraction form
    73,117.10/109,675.65 = 61,841.90/x
  3. Step 3: Cross multiply
    73,117.10x = 109,675.65 × 61,841.90
  4. Step 4: Simplify right side
    73,117.10x = 6,782,550,579.74
  5. Step 5: Solve for x
    x = 6,782,550,579.74/73,117.10
  6. Step 6: Final answer
    x = 92,762.85

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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.