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Finding the Fourth Proportional to 80,428.92, 110,986.90 and 44,618.20

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Solution

The fourth proportional to 80,428.92, 110,986.90 and 44,618.20 is: 61,570.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,428.92 : 110,986.90 = 44,618.20 : x
  2. Step 2: Convert to fraction form
    80,428.92/110,986.90 = 44,618.20/x
  3. Step 3: Cross multiply
    80,428.92x = 110,986.90 × 44,618.20
  4. Step 4: Simplify right side
    80,428.92x = 4,952,035,701.58
  5. Step 5: Solve for x
    x = 4,952,035,701.58/80,428.92
  6. Step 6: Final answer
    x = 61,570.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.