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Finding the Fourth Proportional to 617,213.60, 925,820.40 and 512,237.60

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Solution

The fourth proportional to 617,213.60, 925,820.40 and 512,237.60 is: 768,356.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,213.60 : 925,820.40 = 512,237.60 : x
  2. Step 2: Convert to fraction form
    617,213.60/925,820.40 = 512,237.60/x
  3. Step 3: Cross multiply
    617,213.60x = 925,820.40 × 512,237.60
  4. Step 4: Simplify right side
    617,213.60x = 474,240,019,727.04
  5. Step 5: Solve for x
    x = 474,240,019,727.04/617,213.60
  6. Step 6: Final answer
    x = 768,356.40

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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.