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Finding the Fourth Proportional to 435,878.96, 653,856.08 and 120,335.92

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Solution

The fourth proportional to 435,878.96, 653,856.08 and 120,335.92 is: 180,514.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,878.96 : 653,856.08 = 120,335.92 : x
  2. Step 2: Convert to fraction form
    435,878.96/653,856.08 = 120,335.92/x
  3. Step 3: Cross multiply
    435,878.96x = 653,856.08 × 120,335.92
  4. Step 4: Simplify right side
    435,878.96x = 78,682,372,934.39
  5. Step 5: Solve for x
    x = 78,682,372,934.39/435,878.96
  6. Step 6: Final answer
    x = 180,514.27

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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.