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Finding the Fourth Proportional to 242,695.20, 364,042.80 and 191,956.80

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Solution

The fourth proportional to 242,695.20, 364,042.80 and 191,956.80 is: 287,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,695.20 : 364,042.80 = 191,956.80 : x
  2. Step 2: Convert to fraction form
    242,695.20/364,042.80 = 191,956.80/x
  3. Step 3: Cross multiply
    242,695.20x = 364,042.80 × 191,956.80
  4. Step 4: Simplify right side
    242,695.20x = 69,880,490,951.04
  5. Step 5: Solve for x
    x = 69,880,490,951.04/242,695.20
  6. Step 6: Final answer
    x = 287,935.20

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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.