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Finding the Fourth Proportional to 98,553.54, 135,844.11 and 77,005.62

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Solution

The fourth proportional to 98,553.54, 135,844.11 and 77,005.62 is: 106,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,553.54 : 135,844.11 = 77,005.62 : x
  2. Step 2: Convert to fraction form
    98,553.54/135,844.11 = 77,005.62/x
  3. Step 3: Cross multiply
    98,553.54x = 135,844.11 × 77,005.62
  4. Step 4: Simplify right side
    98,553.54x = 10,460,759,913.90
  5. Step 5: Solve for x
    x = 10,460,759,913.90/98,553.54
  6. Step 6: Final answer
    x = 106,142.91

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1.5x scale

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.