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Finding the Fourth Proportional to 89,744.40, 134,616.60 and 30,565.80

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Solution

The fourth proportional to 89,744.40, 134,616.60 and 30,565.80 is: 45,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,744.40 : 134,616.60 = 30,565.80 : x
  2. Step 2: Convert to fraction form
    89,744.40/134,616.60 = 30,565.80/x
  3. Step 3: Cross multiply
    89,744.40x = 134,616.60 × 30,565.80
  4. Step 4: Simplify right side
    89,744.40x = 4,114,664,072.28
  5. Step 5: Solve for x
    x = 4,114,664,072.28/89,744.40
  6. Step 6: Final answer
    x = 45,848.70

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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.