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Finding the Fourth Proportional to 386,248.80, 579,200.40 and 175,778.40

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Solution

The fourth proportional to 386,248.80, 579,200.40 and 175,778.40 is: 263,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,248.80 : 579,200.40 = 175,778.40 : x
  2. Step 2: Convert to fraction form
    386,248.80/579,200.40 = 175,778.40/x
  3. Step 3: Cross multiply
    386,248.80x = 579,200.40 × 175,778.40
  4. Step 4: Simplify right side
    386,248.80x = 101,810,919,591.36
  5. Step 5: Solve for x
    x = 101,810,919,591.36/386,248.80
  6. Step 6: Final answer
    x = 263,588.96

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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.