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Finding the Fourth Proportional to 156,718.48, 235,116.60 and 45,910.48

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Solution

The fourth proportional to 156,718.48, 235,116.60 and 45,910.48 is: 68,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,718.48 : 235,116.60 = 45,910.48 : x
  2. Step 2: Convert to fraction form
    156,718.48/235,116.60 = 45,910.48/x
  3. Step 3: Cross multiply
    156,718.48x = 235,116.60 × 45,910.48
  4. Step 4: Simplify right side
    156,718.48x = 10,794,315,961.97
  5. Step 5: Solve for x
    x = 10,794,315,961.97/156,718.48
  6. Step 6: Final answer
    x = 68,877.11

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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.