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Finding the Fourth Proportional to 191,456.24, 287,315.60 and 66,797.24

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Solution

The fourth proportional to 191,456.24, 287,315.60 and 66,797.24 is: 100,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,456.24 : 287,315.60 = 66,797.24 : x
  2. Step 2: Convert to fraction form
    191,456.24/287,315.60 = 66,797.24/x
  3. Step 3: Cross multiply
    191,456.24x = 287,315.60 × 66,797.24
  4. Step 4: Simplify right side
    191,456.24x = 19,191,889,088.94
  5. Step 5: Solve for x
    x = 19,191,889,088.94/191,456.24
  6. Step 6: Final answer
    x = 100,241.65

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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.