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Finding the Fourth Proportional to 89,805.65, 134,791.56 and 45,463.55

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Solution

The fourth proportional to 89,805.65, 134,791.56 and 45,463.55 is: 68,237.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,805.65 : 134,791.56 = 45,463.55 : x
  2. Step 2: Convert to fraction form
    89,805.65/134,791.56 = 45,463.55/x
  3. Step 3: Cross multiply
    89,805.65x = 134,791.56 × 45,463.55
  4. Step 4: Simplify right side
    89,805.65x = 6,128,102,153.68
  5. Step 5: Solve for x
    x = 6,128,102,153.68/89,805.65
  6. Step 6: Final answer
    x = 68,237.38

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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.