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Finding the Fourth Proportional to 92,643.60, 139,151.28 and 55,276.64

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Solution

The fourth proportional to 92,643.60, 139,151.28 and 55,276.64 is: 83,025.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,643.60 : 139,151.28 = 55,276.64 : x
  2. Step 2: Convert to fraction form
    92,643.60/139,151.28 = 55,276.64/x
  3. Step 3: Cross multiply
    92,643.60x = 139,151.28 × 55,276.64
  4. Step 4: Simplify right side
    92,643.60x = 7,691,815,210.10
  5. Step 5: Solve for x
    x = 7,691,815,210.10/92,643.60
  6. Step 6: Final answer
    x = 83,025.87

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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.