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Finding the Fourth Proportional to 662,886.40, 995,107.20 and 658,220.80

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Solution

The fourth proportional to 662,886.40, 995,107.20 and 658,220.80 is: 988,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,886.40 : 995,107.20 = 658,220.80 : x
  2. Step 2: Convert to fraction form
    662,886.40/995,107.20 = 658,220.80/x
  3. Step 3: Cross multiply
    662,886.40x = 995,107.20 × 658,220.80
  4. Step 4: Simplify right side
    662,886.40x = 655,000,257,269.76
  5. Step 5: Solve for x
    x = 655,000,257,269.76/662,886.40
  6. Step 6: Final answer
    x = 988,103.33

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Double scale
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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.