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Finding the Fourth Proportional to 191,492.38, 287,369.78 and 66,833.38

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Solution

The fourth proportional to 191,492.38, 287,369.78 and 66,833.38 is: 100,295.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,492.38 : 287,369.78 = 66,833.38 : x
  2. Step 2: Convert to fraction form
    191,492.38/287,369.78 = 66,833.38/x
  3. Step 3: Cross multiply
    191,492.38x = 287,369.78 × 66,833.38
  4. Step 4: Simplify right side
    191,492.38x = 19,205,893,707.26
  5. Step 5: Solve for x
    x = 19,205,893,707.26/191,492.38
  6. Step 6: Final answer
    x = 100,295.86

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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.