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Finding the Fourth Proportional to 617,145.60, 925,718.40 and 512,169.60

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Solution

The fourth proportional to 617,145.60, 925,718.40 and 512,169.60 is: 768,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,145.60 : 925,718.40 = 512,169.60 : x
  2. Step 2: Convert to fraction form
    617,145.60/925,718.40 = 512,169.60/x
  3. Step 3: Cross multiply
    617,145.60x = 925,718.40 × 512,169.60
  4. Step 4: Simplify right side
    617,145.60x = 474,124,822,640.64
  5. Step 5: Solve for x
    x = 474,124,822,640.64/617,145.60
  6. Step 6: Final answer
    x = 768,254.40

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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.