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Finding the Fourth Proportional to 86,016.80, 129,025.20 and 23,693.60

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Solution

The fourth proportional to 86,016.80, 129,025.20 and 23,693.60 is: 35,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,016.80 : 129,025.20 = 23,693.60 : x
  2. Step 2: Convert to fraction form
    86,016.80/129,025.20 = 23,693.60/x
  3. Step 3: Cross multiply
    86,016.80x = 129,025.20 × 23,693.60
  4. Step 4: Simplify right side
    86,016.80x = 3,057,071,478.72
  5. Step 5: Solve for x
    x = 3,057,071,478.72/86,016.80
  6. Step 6: Final answer
    x = 35,540.40

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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.