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Finding the Fourth Proportional to 66,711.90, 100,059.21 and 25,153.50

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Solution

The fourth proportional to 66,711.90, 100,059.21 and 25,153.50 is: 37,726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,711.90 : 100,059.21 = 25,153.50 : x
  2. Step 2: Convert to fraction form
    66,711.90/100,059.21 = 25,153.50/x
  3. Step 3: Cross multiply
    66,711.90x = 100,059.21 × 25,153.50
  4. Step 4: Simplify right side
    66,711.90x = 2,516,839,338.74
  5. Step 5: Solve for x
    x = 2,516,839,338.74/66,711.90
  6. Step 6: Final answer
    x = 37,726.99

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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.