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Finding the Fourth Proportional to 191,518.91, 287,333.17 and 65,186.99

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Solution

The fourth proportional to 191,518.91, 287,333.17 and 65,186.99 is: 97,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,518.91 : 287,333.17 = 65,186.99 : x
  2. Step 2: Convert to fraction form
    191,518.91/287,333.17 = 65,186.99/x
  3. Step 3: Cross multiply
    191,518.91x = 287,333.17 × 65,186.99
  4. Step 4: Simplify right side
    191,518.91x = 18,730,383,042.79
  5. Step 5: Solve for x
    x = 18,730,383,042.79/191,518.91
  6. Step 6: Final answer
    x = 97,799.13

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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.