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Finding the Fourth Proportional to 664,358.10, 996,537.15 and 638,114.10

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Solution

The fourth proportional to 664,358.10, 996,537.15 and 638,114.10 is: 957,171.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,358.10 : 996,537.15 = 638,114.10 : x
  2. Step 2: Convert to fraction form
    664,358.10/996,537.15 = 638,114.10/x
  3. Step 3: Cross multiply
    664,358.10x = 996,537.15 × 638,114.10
  4. Step 4: Simplify right side
    664,358.10x = 635,904,406,588.82
  5. Step 5: Solve for x
    x = 635,904,406,588.82/664,358.10
  6. Step 6: Final answer
    x = 957,171.15

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Half scale
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Double scale
Find fourth proportional to 664,359.10, 996,538.65 and 638,115.10
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.