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Finding the Fourth Proportional to 322,056.40, 482,911.80 and 134,856.40

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Solution

The fourth proportional to 322,056.40, 482,911.80 and 134,856.40 is: 202,212.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,056.40 : 482,911.80 = 134,856.40 : x
  2. Step 2: Convert to fraction form
    322,056.40/482,911.80 = 134,856.40/x
  3. Step 3: Cross multiply
    322,056.40x = 482,911.80 × 134,856.40
  4. Step 4: Simplify right side
    322,056.40x = 65,123,746,865.52
  5. Step 5: Solve for x
    x = 65,123,746,865.52/322,056.40
  6. Step 6: Final answer
    x = 202,212.24

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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.