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Finding the Fourth Proportional to 73,822.60, 110,733.90 and 42,621.40

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Solution

The fourth proportional to 73,822.60, 110,733.90 and 42,621.40 is: 63,932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,822.60 : 110,733.90 = 42,621.40 : x
  2. Step 2: Convert to fraction form
    73,822.60/110,733.90 = 42,621.40/x
  3. Step 3: Cross multiply
    73,822.60x = 110,733.90 × 42,621.40
  4. Step 4: Simplify right side
    73,822.60x = 4,719,633,845.46
  5. Step 5: Solve for x
    x = 4,719,633,845.46/73,822.60
  6. Step 6: Final answer
    x = 63,932.10

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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.