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Finding the Fourth Proportional to 89,859.40, 134,724.30 and 58,712.20

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Solution

The fourth proportional to 89,859.40, 134,724.30 and 58,712.20 is: 88,025.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.40 : 134,724.30 = 58,712.20 : x
  2. Step 2: Convert to fraction form
    89,859.40/134,724.30 = 58,712.20/x
  3. Step 3: Cross multiply
    89,859.40x = 134,724.30 × 58,712.20
  4. Step 4: Simplify right side
    89,859.40x = 7,909,960,046.46
  5. Step 5: Solve for x
    x = 7,909,960,046.46/89,859.40
  6. Step 6: Final answer
    x = 88,025.96

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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.