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Finding the Fourth Proportional to 66,020.70, 91,106.84 and 37,726.38

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Solution

The fourth proportional to 66,020.70, 91,106.84 and 37,726.38 is: 52,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.70 : 91,106.84 = 37,726.38 : x
  2. Step 2: Convert to fraction form
    66,020.70/91,106.84 = 37,726.38/x
  3. Step 3: Cross multiply
    66,020.70x = 91,106.84 × 37,726.38
  4. Step 4: Simplify right side
    66,020.70x = 3,437,131,077.81
  5. Step 5: Solve for x
    x = 3,437,131,077.81/66,020.70
  6. Step 6: Final answer
    x = 52,061.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.