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Finding the Fourth Proportional to 58,048.78, 87,085.98 and 18,609.88

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Solution

The fourth proportional to 58,048.78, 87,085.98 and 18,609.88 is: 27,918.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,048.78 : 87,085.98 = 18,609.88 : x
  2. Step 2: Convert to fraction form
    58,048.78/87,085.98 = 18,609.88/x
  3. Step 3: Cross multiply
    58,048.78x = 87,085.98 × 18,609.88
  4. Step 4: Simplify right side
    58,048.78x = 1,620,659,637.48
  5. Step 5: Solve for x
    x = 1,620,659,637.48/58,048.78
  6. Step 6: Final answer
    x = 27,918.93

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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.