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Finding the Fourth Proportional to 71,640.76, 98,873.34 and 43,346.68

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Solution

The fourth proportional to 71,640.76, 98,873.34 and 43,346.68 is: 59,823.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640.76 : 98,873.34 = 43,346.68 : x
  2. Step 2: Convert to fraction form
    71,640.76/98,873.34 = 43,346.68/x
  3. Step 3: Cross multiply
    71,640.76x = 98,873.34 × 43,346.68
  4. Step 4: Simplify right side
    71,640.76x = 4,285,831,029.51
  5. Step 5: Solve for x
    x = 4,285,831,029.51/71,640.76
  6. Step 6: Final answer
    x = 59,823.92

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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.