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Finding the Fourth Proportional to 663,677.40, 995,516.10 and 220,445.40

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Solution

The fourth proportional to 663,677.40, 995,516.10 and 220,445.40 is: 330,668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,677.40 : 995,516.10 = 220,445.40 : x
  2. Step 2: Convert to fraction form
    663,677.40/995,516.10 = 220,445.40/x
  3. Step 3: Cross multiply
    663,677.40x = 995,516.10 × 220,445.40
  4. Step 4: Simplify right side
    663,677.40x = 219,456,944,870.94
  5. Step 5: Solve for x
    x = 219,456,944,870.94/663,677.40
  6. Step 6: Final answer
    x = 330,668.10

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Half scale
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Double scale
Find fourth proportional to 663,678.40, 995,517.60 and 220,446.40
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.