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Finding the Fourth Proportional to 572,556.40, 858,834.60 and 520,068.40

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Solution

The fourth proportional to 572,556.40, 858,834.60 and 520,068.40 is: 780,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,556.40 : 858,834.60 = 520,068.40 : x
  2. Step 2: Convert to fraction form
    572,556.40/858,834.60 = 520,068.40/x
  3. Step 3: Cross multiply
    572,556.40x = 858,834.60 × 520,068.40
  4. Step 4: Simplify right side
    572,556.40x = 446,652,736,286.64
  5. Step 5: Solve for x
    x = 446,652,736,286.64/572,556.40
  6. Step 6: Final answer
    x = 780,102.60

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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.