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Finding the Fourth Proportional to 262,638.60, 391,459.52 and 247,690.44

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Solution

The fourth proportional to 262,638.60, 391,459.52 and 247,690.44 is: 369,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,638.60 : 391,459.52 = 247,690.44 : x
  2. Step 2: Convert to fraction form
    262,638.60/391,459.52 = 247,690.44/x
  3. Step 3: Cross multiply
    262,638.60x = 391,459.52 × 247,690.44
  4. Step 4: Simplify right side
    262,638.60x = 96,960,779,512.54
  5. Step 5: Solve for x
    x = 96,960,779,512.54/262,638.60
  6. Step 6: Final answer
    x = 369,179.47

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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.