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Finding the Fourth Proportional to 89,034.98, 133,502.54 and 60,986.70

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Solution

The fourth proportional to 89,034.98, 133,502.54 and 60,986.70 is: 91,445.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,034.98 : 133,502.54 = 60,986.70 : x
  2. Step 2: Convert to fraction form
    89,034.98/133,502.54 = 60,986.70/x
  3. Step 3: Cross multiply
    89,034.98x = 133,502.54 × 60,986.70
  4. Step 4: Simplify right side
    89,034.98x = 8,141,879,356.22
  5. Step 5: Solve for x
    x = 8,141,879,356.22/89,034.98
  6. Step 6: Final answer
    x = 91,445.85

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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.