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Finding the Fourth Proportional to 388,841.28, 583,261.86 and 93,353.28

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Solution

The fourth proportional to 388,841.28, 583,261.86 and 93,353.28 is: 140,029.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,841.28 : 583,261.86 = 93,353.28 : x
  2. Step 2: Convert to fraction form
    388,841.28/583,261.86 = 93,353.28/x
  3. Step 3: Cross multiply
    388,841.28x = 583,261.86 × 93,353.28
  4. Step 4: Simplify right side
    388,841.28x = 54,449,407,729.90
  5. Step 5: Solve for x
    x = 54,449,407,729.90/388,841.28
  6. Step 6: Final answer
    x = 140,029.91

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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.