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Finding the Fourth Proportional to 721,961.13, 994,081.01 and 641,248.41

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Solution

The fourth proportional to 721,961.13, 994,081.01 and 641,248.41 is: 882,946.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,961.13 : 994,081.01 = 641,248.41 : x
  2. Step 2: Convert to fraction form
    721,961.13/994,081.01 = 641,248.41/x
  3. Step 3: Cross multiply
    721,961.13x = 994,081.01 × 641,248.41
  4. Step 4: Simplify right side
    721,961.13x = 637,452,867,073.69
  5. Step 5: Solve for x
    x = 637,452,867,073.69/721,961.13
  6. Step 6: Final answer
    x = 882,946.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.