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Finding the Fourth Proportional to 73,386.60, 109,788.30 and 63,634.20

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Solution

The fourth proportional to 73,386.60, 109,788.30 and 63,634.20 is: 95,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,386.60 : 109,788.30 = 63,634.20 : x
  2. Step 2: Convert to fraction form
    73,386.60/109,788.30 = 63,634.20/x
  3. Step 3: Cross multiply
    73,386.60x = 109,788.30 × 63,634.20
  4. Step 4: Simplify right side
    73,386.60x = 6,986,290,639.86
  5. Step 5: Solve for x
    x = 6,986,290,639.86/73,386.60
  6. Step 6: Final answer
    x = 95,198.45

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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.