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Finding the Fourth Proportional to 178,953.43, 246,941.05 and 105,354.18

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Solution

The fourth proportional to 178,953.43, 246,941.05 and 105,354.18 is: 145,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,953.43 : 246,941.05 = 105,354.18 : x
  2. Step 2: Convert to fraction form
    178,953.43/246,941.05 = 105,354.18/x
  3. Step 3: Cross multiply
    178,953.43x = 246,941.05 × 105,354.18
  4. Step 4: Simplify right side
    178,953.43x = 26,016,270,069.61
  5. Step 5: Solve for x
    x = 26,016,270,069.61/178,953.43
  6. Step 6: Final answer
    x = 145,380.11

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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.