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Finding the Fourth Proportional to 664,460.10, 996,690.15 and 638,216.10

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Solution

The fourth proportional to 664,460.10, 996,690.15 and 638,216.10 is: 957,324.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,460.10 : 996,690.15 = 638,216.10 : x
  2. Step 2: Convert to fraction form
    664,460.10/996,690.15 = 638,216.10/x
  3. Step 3: Cross multiply
    664,460.10x = 996,690.15 × 638,216.10
  4. Step 4: Simplify right side
    664,460.10x = 636,103,700,441.42
  5. Step 5: Solve for x
    x = 636,103,700,441.42/664,460.10
  6. Step 6: Final answer
    x = 957,324.15

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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.