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Finding the Fourth Proportional to 605,211.40, 907,817.10 and 574,107.40

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Solution

The fourth proportional to 605,211.40, 907,817.10 and 574,107.40 is: 861,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,211.40 : 907,817.10 = 574,107.40 : x
  2. Step 2: Convert to fraction form
    605,211.40/907,817.10 = 574,107.40/x
  3. Step 3: Cross multiply
    605,211.40x = 907,817.10 × 574,107.40
  4. Step 4: Simplify right side
    605,211.40x = 521,184,514,956.54
  5. Step 5: Solve for x
    x = 521,184,514,956.54/605,211.40
  6. Step 6: Final answer
    x = 861,161.10

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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.