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Finding the Fourth Proportional to 58,581.88, 87,854.63 and 21,137.08

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Solution

The fourth proportional to 58,581.88, 87,854.63 and 21,137.08 is: 31,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,581.88 : 87,854.63 = 21,137.08 : x
  2. Step 2: Convert to fraction form
    58,581.88/87,854.63 = 21,137.08/x
  3. Step 3: Cross multiply
    58,581.88x = 87,854.63 × 21,137.08
  4. Step 4: Simplify right side
    58,581.88x = 1,856,990,237.00
  5. Step 5: Solve for x
    x = 1,856,990,237.00/58,581.88
  6. Step 6: Final answer
    x = 31,699.06

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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.