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Finding the Fourth Proportional to 218,748.80, 328,276.80 and 94,179.20

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Solution

The fourth proportional to 218,748.80, 328,276.80 and 94,179.20 is: 141,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,748.80 : 328,276.80 = 94,179.20 : x
  2. Step 2: Convert to fraction form
    218,748.80/328,276.80 = 94,179.20/x
  3. Step 3: Cross multiply
    218,748.80x = 328,276.80 × 94,179.20
  4. Step 4: Simplify right side
    218,748.80x = 30,916,846,402.56
  5. Step 5: Solve for x
    x = 30,916,846,402.56/218,748.80
  6. Step 6: Final answer
    x = 141,334.93

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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.