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Finding the Fourth Proportional to 58,480.78, 87,732.02 and 18,509.82

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Solution

The fourth proportional to 58,480.78, 87,732.02 and 18,509.82 is: 27,768.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,480.78 : 87,732.02 = 18,509.82 : x
  2. Step 2: Convert to fraction form
    58,480.78/87,732.02 = 18,509.82/x
  3. Step 3: Cross multiply
    58,480.78x = 87,732.02 × 18,509.82
  4. Step 4: Simplify right side
    58,480.78x = 1,623,904,079.79
  5. Step 5: Solve for x
    x = 1,623,904,079.79/58,480.78
  6. Step 6: Final answer
    x = 27,768.17

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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.