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Finding the Fourth Proportional to 159,876.72, 239,673.95 and 65,186.10

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Solution

The fourth proportional to 159,876.72, 239,673.95 and 65,186.10 is: 97,721.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,876.72 : 239,673.95 = 65,186.10 : x
  2. Step 2: Convert to fraction form
    159,876.72/239,673.95 = 65,186.10/x
  3. Step 3: Cross multiply
    159,876.72x = 239,673.95 × 65,186.10
  4. Step 4: Simplify right side
    159,876.72x = 15,623,409,990.61
  5. Step 5: Solve for x
    x = 15,623,409,990.61/159,876.72
  6. Step 6: Final answer
    x = 97,721.61

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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.