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Finding the Fourth Proportional to 66,542.88, 99,861.84 and 49,058.40

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Solution

The fourth proportional to 66,542.88, 99,861.84 and 49,058.40 is: 73,622.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,542.88 : 99,861.84 = 49,058.40 : x
  2. Step 2: Convert to fraction form
    66,542.88/99,861.84 = 49,058.40/x
  3. Step 3: Cross multiply
    66,542.88x = 99,861.84 × 49,058.40
  4. Step 4: Simplify right side
    66,542.88x = 4,899,062,091.46
  5. Step 5: Solve for x
    x = 4,899,062,091.46/66,542.88
  6. Step 6: Final answer
    x = 73,622.63

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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.