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Finding the Fourth Proportional to 664,981.60, 997,472.40 and 166,345.60

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Solution

The fourth proportional to 664,981.60, 997,472.40 and 166,345.60 is: 249,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,981.60 : 997,472.40 = 166,345.60 : x
  2. Step 2: Convert to fraction form
    664,981.60/997,472.40 = 166,345.60/x
  3. Step 3: Cross multiply
    664,981.60x = 997,472.40 × 166,345.60
  4. Step 4: Simplify right side
    664,981.60x = 165,925,144,861.44
  5. Step 5: Solve for x
    x = 165,925,144,861.44/664,981.60
  6. Step 6: Final answer
    x = 249,518.40

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Half scale
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Double scale
Find fourth proportional to 664,982.60, 997,473.90 and 166,346.60
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.