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Finding the Fourth Proportional to 66,019.95, 91,105.80 and 37,725.63

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Solution

The fourth proportional to 66,019.95, 91,105.80 and 37,725.63 is: 52,060.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019.95 : 91,105.80 = 37,725.63 : x
  2. Step 2: Convert to fraction form
    66,019.95/91,105.80 = 37,725.63/x
  3. Step 3: Cross multiply
    66,019.95x = 91,105.80 × 37,725.63
  4. Step 4: Simplify right side
    66,019.95x = 3,437,023,701.65
  5. Step 5: Solve for x
    x = 3,437,023,701.65/66,019.95
  6. Step 6: Final answer
    x = 52,060.38

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Double scale
Find fourth proportional to 66,020.95, 91,107.18 and 37,726.63
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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.