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Finding the Fourth Proportional to 58,486.56, 87,721.20 and 16,928.16

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Solution

The fourth proportional to 58,486.56, 87,721.20 and 16,928.16 is: 25,389.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,486.56 : 87,721.20 = 16,928.16 : x
  2. Step 2: Convert to fraction form
    58,486.56/87,721.20 = 16,928.16/x
  3. Step 3: Cross multiply
    58,486.56x = 87,721.20 × 16,928.16
  4. Step 4: Simplify right side
    58,486.56x = 1,484,958,508.99
  5. Step 5: Solve for x
    x = 1,484,958,508.99/58,486.56
  6. Step 6: Final answer
    x = 25,389.74

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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.