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Finding the Fourth Proportional to 170,902.90, 256,354.35 and 161,061.40

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Solution

The fourth proportional to 170,902.90, 256,354.35 and 161,061.40 is: 241,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,902.90 : 256,354.35 = 161,061.40 : x
  2. Step 2: Convert to fraction form
    170,902.90/256,354.35 = 161,061.40/x
  3. Step 3: Cross multiply
    170,902.90x = 256,354.35 × 161,061.40
  4. Step 4: Simplify right side
    170,902.90x = 41,288,790,507.09
  5. Step 5: Solve for x
    x = 41,288,790,507.09/170,902.90
  6. Step 6: Final answer
    x = 241,592.10

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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.