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Finding the Fourth Proportional to 89,879.70, 134,848.35 and 60,330.90

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Solution

The fourth proportional to 89,879.70, 134,848.35 and 60,330.90 is: 90,515.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,879.70 : 134,848.35 = 60,330.90 : x
  2. Step 2: Convert to fraction form
    89,879.70/134,848.35 = 60,330.90/x
  3. Step 3: Cross multiply
    89,879.70x = 134,848.35 × 60,330.90
  4. Step 4: Simplify right side
    89,879.70x = 8,135,522,319.02
  5. Step 5: Solve for x
    x = 8,135,522,319.02/89,879.70
  6. Step 6: Final answer
    x = 90,515.68

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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.