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Finding the Fourth Proportional to 572,722.40, 859,083.60 and 520,234.40

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Solution

The fourth proportional to 572,722.40, 859,083.60 and 520,234.40 is: 780,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,722.40 : 859,083.60 = 520,234.40 : x
  2. Step 2: Convert to fraction form
    572,722.40/859,083.60 = 520,234.40/x
  3. Step 3: Cross multiply
    572,722.40x = 859,083.60 × 520,234.40
  4. Step 4: Simplify right side
    572,722.40x = 446,924,841,195.84
  5. Step 5: Solve for x
    x = 446,924,841,195.84/572,722.40
  6. Step 6: Final answer
    x = 780,351.60

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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.