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Finding the Fourth Proportional to 572,406.60, 858,609.90 and 323,574.60

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Solution

The fourth proportional to 572,406.60, 858,609.90 and 323,574.60 is: 485,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,406.60 : 858,609.90 = 323,574.60 : x
  2. Step 2: Convert to fraction form
    572,406.60/858,609.90 = 323,574.60/x
  3. Step 3: Cross multiply
    572,406.60x = 858,609.90 × 323,574.60
  4. Step 4: Simplify right side
    572,406.60x = 277,824,354,948.54
  5. Step 5: Solve for x
    x = 277,824,354,948.54/572,406.60
  6. Step 6: Final answer
    x = 485,361.90

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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.