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Finding the Fourth Proportional to 92,977.20, 139,465.80 and 29,797.20

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Solution

The fourth proportional to 92,977.20, 139,465.80 and 29,797.20 is: 44,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,977.20 : 139,465.80 = 29,797.20 : x
  2. Step 2: Convert to fraction form
    92,977.20/139,465.80 = 29,797.20/x
  3. Step 3: Cross multiply
    92,977.20x = 139,465.80 × 29,797.20
  4. Step 4: Simplify right side
    92,977.20x = 4,155,690,335.76
  5. Step 5: Solve for x
    x = 4,155,690,335.76/92,977.20
  6. Step 6: Final answer
    x = 44,695.80

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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.