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Finding the Fourth Proportional to 252,885.20, 379,765.20 and 164,530.40

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Solution

The fourth proportional to 252,885.20, 379,765.20 and 164,530.40 is: 247,080.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,885.20 : 379,765.20 = 164,530.40 : x
  2. Step 2: Convert to fraction form
    252,885.20/379,765.20 = 164,530.40/x
  3. Step 3: Cross multiply
    252,885.20x = 379,765.20 × 164,530.40
  4. Step 4: Simplify right side
    252,885.20x = 62,482,920,262.08
  5. Step 5: Solve for x
    x = 62,482,920,262.08/252,885.20
  6. Step 6: Final answer
    x = 247,080.18

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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.