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Finding the Fourth Proportional to 60,247.89, 90,249.12 and 28,561.91

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Solution

The fourth proportional to 60,247.89, 90,249.12 and 28,561.91 is: 42,784.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,247.89 : 90,249.12 = 28,561.91 : x
  2. Step 2: Convert to fraction form
    60,247.89/90,249.12 = 28,561.91/x
  3. Step 3: Cross multiply
    60,247.89x = 90,249.12 × 28,561.91
  4. Step 4: Simplify right side
    60,247.89x = 2,577,687,243.02
  5. Step 5: Solve for x
    x = 2,577,687,243.02/60,247.89
  6. Step 6: Final answer
    x = 42,784.69

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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.