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Finding the Fourth Proportional to 191,092.10, 286,644.72 and 85,911.44

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Solution

The fourth proportional to 191,092.10, 286,644.72 and 85,911.44 is: 128,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,092.10 : 286,644.72 = 85,911.44 : x
  2. Step 2: Convert to fraction form
    191,092.10/286,644.72 = 85,911.44/x
  3. Step 3: Cross multiply
    191,092.10x = 286,644.72 × 85,911.44
  4. Step 4: Simplify right side
    191,092.10x = 24,626,060,663.60
  5. Step 5: Solve for x
    x = 24,626,060,663.60/191,092.10
  6. Step 6: Final answer
    x = 128,870.11

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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.