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Finding the Fourth Proportional to 80,601.90, 112,959.30 and 80,601.90

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Solution

The fourth proportional to 80,601.90, 112,959.30 and 80,601.90 is: 112,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,601.90 : 112,959.30 = 80,601.90 : x
  2. Step 2: Convert to fraction form
    80,601.90/112,959.30 = 80,601.90/x
  3. Step 3: Cross multiply
    80,601.90x = 112,959.30 × 80,601.90
  4. Step 4: Simplify right side
    80,601.90x = 9,104,734,202.67
  5. Step 5: Solve for x
    x = 9,104,734,202.67/80,601.90
  6. Step 6: Final answer
    x = 112,959.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.