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Finding the Fourth Proportional to 58,644.08, 87,961.76 and 18,661.48

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Solution

The fourth proportional to 58,644.08, 87,961.76 and 18,661.48 is: 27,990.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,644.08 : 87,961.76 = 18,661.48 : x
  2. Step 2: Convert to fraction form
    58,644.08/87,961.76 = 18,661.48/x
  3. Step 3: Cross multiply
    58,644.08x = 87,961.76 × 18,661.48
  4. Step 4: Simplify right side
    58,644.08x = 1,641,496,625.00
  5. Step 5: Solve for x
    x = 1,641,496,625.00/58,644.08
  6. Step 6: Final answer
    x = 27,990.83

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1.5x scale

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.