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Finding the Fourth Proportional to 354,916.80, 532,375.20 and 319,924.80

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Solution

The fourth proportional to 354,916.80, 532,375.20 and 319,924.80 is: 479,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,916.80 : 532,375.20 = 319,924.80 : x
  2. Step 2: Convert to fraction form
    354,916.80/532,375.20 = 319,924.80/x
  3. Step 3: Cross multiply
    354,916.80x = 532,375.20 × 319,924.80
  4. Step 4: Simplify right side
    354,916.80x = 170,320,029,384.96
  5. Step 5: Solve for x
    x = 170,320,029,384.96/354,916.80
  6. Step 6: Final answer
    x = 479,887.20

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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.