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Finding the Fourth Proportional to 58,104.80, 87,114.48 and 18,639.52

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Solution

The fourth proportional to 58,104.80, 87,114.48 and 18,639.52 is: 27,945.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,104.80 : 87,114.48 = 18,639.52 : x
  2. Step 2: Convert to fraction form
    58,104.80/87,114.48 = 18,639.52/x
  3. Step 3: Cross multiply
    58,104.80x = 87,114.48 × 18,639.52
  4. Step 4: Simplify right side
    58,104.80x = 1,623,772,092.25
  5. Step 5: Solve for x
    x = 1,623,772,092.25/58,104.80
  6. Step 6: Final answer
    x = 27,945.58

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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.