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Finding the Fourth Proportional to 120,874.40, 181,312.80 and 36,634.76

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Solution

The fourth proportional to 120,874.40, 181,312.80 and 36,634.76 is: 54,952.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,874.40 : 181,312.80 = 36,634.76 : x
  2. Step 2: Convert to fraction form
    120,874.40/181,312.80 = 36,634.76/x
  3. Step 3: Cross multiply
    120,874.40x = 181,312.80 × 36,634.76
  4. Step 4: Simplify right side
    120,874.40x = 6,642,350,912.93
  5. Step 5: Solve for x
    x = 6,642,350,912.93/120,874.40
  6. Step 6: Final answer
    x = 54,952.50

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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.