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Finding the Fourth Proportional to 70,083.55, 96,841.81 and 49,905.40

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Solution

The fourth proportional to 70,083.55, 96,841.81 and 49,905.40 is: 68,959.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,083.55 : 96,841.81 = 49,905.40 : x
  2. Step 2: Convert to fraction form
    70,083.55/96,841.81 = 49,905.40/x
  3. Step 3: Cross multiply
    70,083.55x = 96,841.81 × 49,905.40
  4. Step 4: Simplify right side
    70,083.55x = 4,832,929,327.16
  5. Step 5: Solve for x
    x = 4,832,929,327.16/70,083.55
  6. Step 6: Final answer
    x = 68,959.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.