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Finding the Fourth Proportional to 73,311.20, 110,031.60 and 62,813.60

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Solution

The fourth proportional to 73,311.20, 110,031.60 and 62,813.60 is: 94,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,311.20 : 110,031.60 = 62,813.60 : x
  2. Step 2: Convert to fraction form
    73,311.20/110,031.60 = 62,813.60/x
  3. Step 3: Cross multiply
    73,311.20x = 110,031.60 × 62,813.60
  4. Step 4: Simplify right side
    73,311.20x = 6,911,480,909.76
  5. Step 5: Solve for x
    x = 6,911,480,909.76/73,311.20
  6. Step 6: Final answer
    x = 94,275.92

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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.