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Finding the Fourth Proportional to 71,662.92, 98,878.77 and 43,368

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Solution

The fourth proportional to 71,662.92, 98,878.77 and 43,368 is: 59,838.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,662.92 : 98,878.77 = 43,368 : x
  2. Step 2: Convert to fraction form
    71,662.92/98,878.77 = 43,368/x
  3. Step 3: Cross multiply
    71,662.92x = 98,878.77 × 43,368
  4. Step 4: Simplify right side
    71,662.92x = 4,288,174,497.36
  5. Step 5: Solve for x
    x = 4,288,174,497.36/71,662.92
  6. Step 6: Final answer
    x = 59,838.12

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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.