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Finding the Fourth Proportional to 689,344.60, 951,281.91 and 383,414.40

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Solution

The fourth proportional to 689,344.60, 951,281.91 and 383,414.40 is: 529,104.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,344.60 : 951,281.91 = 383,414.40 : x
  2. Step 2: Convert to fraction form
    689,344.60/951,281.91 = 383,414.40/x
  3. Step 3: Cross multiply
    689,344.60x = 951,281.91 × 383,414.40
  4. Step 4: Simplify right side
    689,344.60x = 364,735,180,876.58
  5. Step 5: Solve for x
    x = 364,735,180,876.58/689,344.60
  6. Step 6: Final answer
    x = 529,104.28

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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.