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Finding the Fourth Proportional to 191,633.84, 287,344.95 and 88,939.20

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Solution

The fourth proportional to 191,633.84, 287,344.95 and 88,939.20 is: 133,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,633.84 : 287,344.95 = 88,939.20 : x
  2. Step 2: Convert to fraction form
    191,633.84/287,344.95 = 88,939.20/x
  3. Step 3: Cross multiply
    191,633.84x = 287,344.95 × 88,939.20
  4. Step 4: Simplify right side
    191,633.84x = 25,556,229,977.04
  5. Step 5: Solve for x
    x = 25,556,229,977.04/191,633.84
  6. Step 6: Final answer
    x = 133,359.69

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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.