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Finding the Fourth Proportional to 886,793.64, 1,223,640.88 and 499,553.68

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Solution

The fourth proportional to 886,793.64, 1,223,640.88 and 499,553.68 is: 689,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,793.64 : 1,223,640.88 = 499,553.68 : x
  2. Step 2: Convert to fraction form
    886,793.64/1,223,640.88 = 499,553.68/x
  3. Step 3: Cross multiply
    886,793.64x = 1,223,640.88 × 499,553.68
  4. Step 4: Simplify right side
    886,793.64x = 611,274,304,602.44
  5. Step 5: Solve for x
    x = 611,274,304,602.44/886,793.64
  6. Step 6: Final answer
    x = 689,308.40

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Double scale
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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.