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Finding the Fourth Proportional to 58,677.98, 87,981.81 and 18,679.69

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Solution

The fourth proportional to 58,677.98, 87,981.81 and 18,679.69 is: 28,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,677.98 : 87,981.81 = 18,679.69 : x
  2. Step 2: Convert to fraction form
    58,677.98/87,981.81 = 18,679.69/x
  3. Step 3: Cross multiply
    58,677.98x = 87,981.81 × 18,679.69
  4. Step 4: Simplify right side
    58,677.98x = 1,643,472,936.44
  5. Step 5: Solve for x
    x = 1,643,472,936.44/58,677.98
  6. Step 6: Final answer
    x = 28,008.34

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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.