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Finding the Fourth Proportional to 80,734,583.20, 121,101,874.80 and 80,734,583.20

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Solution

The fourth proportional to 80,734,583.20, 121,101,874.80 and 80,734,583.20 is: 121,101,874.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,734,583.20 : 121,101,874.80 = 80,734,583.20 : x
  2. Step 2: Convert to fraction form
    80,734,583.20/121,101,874.80 = 80,734,583.20/x
  3. Step 3: Cross multiply
    80,734,583.20x = 121,101,874.80 × 80,734,583.20
  4. Step 4: Simplify right side
    80,734,583.20x = 9,777,109,386,716,584
  5. Step 5: Solve for x
    x = 9,777,109,386,716,584/80,734,583.20
  6. Step 6: Final answer
    x = 121,101,874.80

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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.