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Finding the Fourth Proportional to 60,149.46, 90,255.30 and 43,645.56

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Solution

The fourth proportional to 60,149.46, 90,255.30 and 43,645.56 is: 65,490.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,149.46 : 90,255.30 = 43,645.56 : x
  2. Step 2: Convert to fraction form
    60,149.46/90,255.30 = 43,645.56/x
  3. Step 3: Cross multiply
    60,149.46x = 90,255.30 × 43,645.56
  4. Step 4: Simplify right side
    60,149.46x = 3,939,243,111.47
  5. Step 5: Solve for x
    x = 3,939,243,111.47/60,149.46
  6. Step 6: Final answer
    x = 65,490.91

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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.