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Finding the Fourth Proportional to 58,553.12, 87,917.16 and 57,678.32

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Solution

The fourth proportional to 58,553.12, 87,917.16 and 57,678.32 is: 86,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,553.12 : 87,917.16 = 57,678.32 : x
  2. Step 2: Convert to fraction form
    58,553.12/87,917.16 = 57,678.32/x
  3. Step 3: Cross multiply
    58,553.12x = 87,917.16 × 57,678.32
  4. Step 4: Simplify right side
    58,553.12x = 5,070,914,087.97
  5. Step 5: Solve for x
    x = 5,070,914,087.97/58,553.12
  6. Step 6: Final answer
    x = 86,603.65

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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.