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Finding the Fourth Proportional to 281,937.69, 389,081.70 and 161,098.65

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Solution

The fourth proportional to 281,937.69, 389,081.70 and 161,098.65 is: 222,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,937.69 : 389,081.70 = 161,098.65 : x
  2. Step 2: Convert to fraction form
    281,937.69/389,081.70 = 161,098.65/x
  3. Step 3: Cross multiply
    281,937.69x = 389,081.70 × 161,098.65
  4. Step 4: Simplify right side
    281,937.69x = 62,680,536,609.71
  5. Step 5: Solve for x
    x = 62,680,536,609.71/281,937.69
  6. Step 6: Final answer
    x = 222,320.53

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1.5x scale

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.