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Finding the Fourth Proportional to 120,597.52, 180,870.18 and 76,164.88

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Solution

The fourth proportional to 120,597.52, 180,870.18 and 76,164.88 is: 114,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,597.52 : 180,870.18 = 76,164.88 : x
  2. Step 2: Convert to fraction form
    120,597.52/180,870.18 = 76,164.88/x
  3. Step 3: Cross multiply
    120,597.52x = 180,870.18 × 76,164.88
  4. Step 4: Simplify right side
    120,597.52x = 13,775,955,555.28
  5. Step 5: Solve for x
    x = 13,775,955,555.28/120,597.52
  6. Step 6: Final answer
    x = 114,230.84

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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.