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Finding the Fourth Proportional to 572,189.60, 858,284.40 and 472,462.40

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Solution

The fourth proportional to 572,189.60, 858,284.40 and 472,462.40 is: 708,693.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,189.60 : 858,284.40 = 472,462.40 : x
  2. Step 2: Convert to fraction form
    572,189.60/858,284.40 = 472,462.40/x
  3. Step 3: Cross multiply
    572,189.60x = 858,284.40 × 472,462.40
  4. Step 4: Simplify right side
    572,189.60x = 405,507,107,506.56
  5. Step 5: Solve for x
    x = 405,507,107,506.56/572,189.60
  6. Step 6: Final answer
    x = 708,693.60

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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.