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Finding the Fourth Proportional to 289,626.66, 399,668.28 and 168,787.62

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Solution

The fourth proportional to 289,626.66, 399,668.28 and 168,787.62 is: 232,917.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,626.66 : 399,668.28 = 168,787.62 : x
  2. Step 2: Convert to fraction form
    289,626.66/399,668.28 = 168,787.62/x
  3. Step 3: Cross multiply
    289,626.66x = 399,668.28 × 168,787.62
  4. Step 4: Simplify right side
    289,626.66x = 67,459,057,770.69
  5. Step 5: Solve for x
    x = 67,459,057,770.69/289,626.66
  6. Step 6: Final answer
    x = 232,917.29

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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.