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Finding the Fourth Proportional to 572,546.80, 858,820.20 and 543,678.40

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Solution

The fourth proportional to 572,546.80, 858,820.20 and 543,678.40 is: 815,517.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,546.80 : 858,820.20 = 543,678.40 : x
  2. Step 2: Convert to fraction form
    572,546.80/858,820.20 = 543,678.40/x
  3. Step 3: Cross multiply
    572,546.80x = 858,820.20 × 543,678.40
  4. Step 4: Simplify right side
    572,546.80x = 466,921,992,223.68
  5. Step 5: Solve for x
    x = 466,921,992,223.68/572,546.80
  6. Step 6: Final answer
    x = 815,517.60

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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.