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Finding the Fourth Proportional to 66,466.80, 99,660.06 and 26,491.95

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Solution

The fourth proportional to 66,466.80, 99,660.06 and 26,491.95 is: 39,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.80 : 99,660.06 = 26,491.95 : x
  2. Step 2: Convert to fraction form
    66,466.80/99,660.06 = 26,491.95/x
  3. Step 3: Cross multiply
    66,466.80x = 99,660.06 × 26,491.95
  4. Step 4: Simplify right side
    66,466.80x = 2,640,189,326.52
  5. Step 5: Solve for x
    x = 2,640,189,326.52/66,466.80
  6. Step 6: Final answer
    x = 39,721.93

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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.