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Finding the Fourth Proportional to 351,799.20, 527,698.80 and 141,328.80

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Solution

The fourth proportional to 351,799.20, 527,698.80 and 141,328.80 is: 211,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,799.20 : 527,698.80 = 141,328.80 : x
  2. Step 2: Convert to fraction form
    351,799.20/527,698.80 = 141,328.80/x
  3. Step 3: Cross multiply
    351,799.20x = 527,698.80 × 141,328.80
  4. Step 4: Simplify right side
    351,799.20x = 74,579,038,165.44
  5. Step 5: Solve for x
    x = 74,579,038,165.44/351,799.20
  6. Step 6: Final answer
    x = 211,993.20

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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.