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Finding the Fourth Proportional to 866,392.68, 1,299,810.42 and 333,770.88

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Solution

The fourth proportional to 866,392.68, 1,299,810.42 and 333,770.88 is: 500,741.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,392.68 : 1,299,810.42 = 333,770.88 : x
  2. Step 2: Convert to fraction form
    866,392.68/1,299,810.42 = 333,770.88/x
  3. Step 3: Cross multiply
    866,392.68x = 1,299,810.42 × 333,770.88
  4. Step 4: Simplify right side
    866,392.68x = 433,838,867,716.57
  5. Step 5: Solve for x
    x = 433,838,867,716.57/866,392.68
  6. Step 6: Final answer
    x = 500,741.61

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Double scale
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Similar ratio
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1.5x scale

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.