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Finding the Fourth Proportional to 113,882.20, 170,896.20 and 66,497.20

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Solution

The fourth proportional to 113,882.20, 170,896.20 and 66,497.20 is: 99,788.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,882.20 : 170,896.20 = 66,497.20 : x
  2. Step 2: Convert to fraction form
    113,882.20/170,896.20 = 66,497.20/x
  3. Step 3: Cross multiply
    113,882.20x = 170,896.20 × 66,497.20
  4. Step 4: Simplify right side
    113,882.20x = 11,364,118,790.64
  5. Step 5: Solve for x
    x = 11,364,118,790.64/113,882.20
  6. Step 6: Final answer
    x = 99,788.37

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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.