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Finding the Fourth Proportional to 587,780.20, 881,799.90 and 188,439.40

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Solution

The fourth proportional to 587,780.20, 881,799.90 and 188,439.40 is: 282,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,780.20 : 881,799.90 = 188,439.40 : x
  2. Step 2: Convert to fraction form
    587,780.20/881,799.90 = 188,439.40/x
  3. Step 3: Cross multiply
    587,780.20x = 881,799.90 × 188,439.40
  4. Step 4: Simplify right side
    587,780.20x = 166,165,844,076.06
  5. Step 5: Solve for x
    x = 166,165,844,076.06/587,780.20
  6. Step 6: Final answer
    x = 282,700.65

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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.