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Finding the Fourth Proportional to 45,862.60, 68,793.90 and 30,116.20

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Solution

The fourth proportional to 45,862.60, 68,793.90 and 30,116.20 is: 45,174.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,862.60 : 68,793.90 = 30,116.20 : x
  2. Step 2: Convert to fraction form
    45,862.60/68,793.90 = 30,116.20/x
  3. Step 3: Cross multiply
    45,862.60x = 68,793.90 × 30,116.20
  4. Step 4: Simplify right side
    45,862.60x = 2,071,810,851.18
  5. Step 5: Solve for x
    x = 2,071,810,851.18/45,862.60
  6. Step 6: Final answer
    x = 45,174.30

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1.5x scale

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.