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Finding the Fourth Proportional to 66,177.90, 99,266.85 and 61,803.90

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Solution

The fourth proportional to 66,177.90, 99,266.85 and 61,803.90 is: 92,705.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,177.90 : 99,266.85 = 61,803.90 : x
  2. Step 2: Convert to fraction form
    66,177.90/99,266.85 = 61,803.90/x
  3. Step 3: Cross multiply
    66,177.90x = 99,266.85 × 61,803.90
  4. Step 4: Simplify right side
    66,177.90x = 6,135,078,470.72
  5. Step 5: Solve for x
    x = 6,135,078,470.72/66,177.90
  6. Step 6: Final answer
    x = 92,705.85

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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.