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Finding the Fourth Proportional to 628,679.11, 938,454.40 and 581,843.29

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Solution

The fourth proportional to 628,679.11, 938,454.40 and 581,843.29 is: 868,540.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,679.11 : 938,454.40 = 581,843.29 : x
  2. Step 2: Convert to fraction form
    628,679.11/938,454.40 = 581,843.29/x
  3. Step 3: Cross multiply
    628,679.11x = 938,454.40 × 581,843.29
  4. Step 4: Simplify right side
    628,679.11x = 546,033,390,918.70
  5. Step 5: Solve for x
    x = 546,033,390,918.70/628,679.11
  6. Step 6: Final answer
    x = 868,540.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.