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Finding the Fourth Proportional to 120,059.46, 165,679.68 and 66,343.32

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Solution

The fourth proportional to 120,059.46, 165,679.68 and 66,343.32 is: 91,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,059.46 : 165,679.68 = 66,343.32 : x
  2. Step 2: Convert to fraction form
    120,059.46/165,679.68 = 66,343.32/x
  3. Step 3: Cross multiply
    120,059.46x = 165,679.68 × 66,343.32
  4. Step 4: Simplify right side
    120,059.46x = 10,991,740,027.74
  5. Step 5: Solve for x
    x = 10,991,740,027.74/120,059.46
  6. Step 6: Final answer
    x = 91,552.47

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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.