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Finding the Fourth Proportional to 664,400.10, 996,600.15 and 617,160.90

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Solution

The fourth proportional to 664,400.10, 996,600.15 and 617,160.90 is: 925,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,400.10 : 996,600.15 = 617,160.90 : x
  2. Step 2: Convert to fraction form
    664,400.10/996,600.15 = 617,160.90/x
  3. Step 3: Cross multiply
    664,400.10x = 996,600.15 × 617,160.90
  4. Step 4: Simplify right side
    664,400.10x = 615,062,645,514.14
  5. Step 5: Solve for x
    x = 615,062,645,514.14/664,400.10
  6. Step 6: Final answer
    x = 925,741.35

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Half scale
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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.