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Finding the Fourth Proportional to 664,869.30, 997,303.90 and 166,233.30

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Solution

The fourth proportional to 664,869.30, 997,303.90 and 166,233.30 is: 249,349.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,869.30 : 997,303.90 = 166,233.30 : x
  2. Step 2: Convert to fraction form
    664,869.30/997,303.90 = 166,233.30/x
  3. Step 3: Cross multiply
    664,869.30x = 997,303.90 × 166,233.30
  4. Step 4: Simplify right side
    664,869.30x = 165,785,112,997.77
  5. Step 5: Solve for x
    x = 165,785,112,997.77/664,869.30
  6. Step 6: Final answer
    x = 249,349.93

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Half scale
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Double scale
Find fourth proportional to 664,870.30, 997,305.40 and 166,234.30
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.