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Finding the Fourth Proportional to 664,864.75, 997,297.13 and 166,228.75

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Solution

The fourth proportional to 664,864.75, 997,297.13 and 166,228.75 is: 249,343.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,864.75 : 997,297.13 = 166,228.75 : x
  2. Step 2: Convert to fraction form
    664,864.75/997,297.13 = 166,228.75/x
  3. Step 3: Cross multiply
    664,864.75x = 997,297.13 × 166,228.75
  4. Step 4: Simplify right side
    664,864.75x = 165,779,455,298.49
  5. Step 5: Solve for x
    x = 165,779,455,298.49/664,864.75
  6. Step 6: Final answer
    x = 249,343.13

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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.