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Finding the Fourth Proportional to 617,213.10, 925,819.65 and 512,237.10

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Solution

The fourth proportional to 617,213.10, 925,819.65 and 512,237.10 is: 768,355.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,213.10 : 925,819.65 = 512,237.10 : x
  2. Step 2: Convert to fraction form
    617,213.10/925,819.65 = 512,237.10/x
  3. Step 3: Cross multiply
    617,213.10x = 925,819.65 × 512,237.10
  4. Step 4: Simplify right side
    617,213.10x = 474,239,172,639.02
  5. Step 5: Solve for x
    x = 474,239,172,639.02/617,213.10
  6. Step 6: Final answer
    x = 768,355.65

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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.