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Finding the Fourth Proportional to 58,666.66, 87,999.94 and 21,217.96

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Solution

The fourth proportional to 58,666.66, 87,999.94 and 21,217.96 is: 31,826.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,666.66 : 87,999.94 = 21,217.96 : x
  2. Step 2: Convert to fraction form
    58,666.66/87,999.94 = 21,217.96/x
  3. Step 3: Cross multiply
    58,666.66x = 87,999.94 × 21,217.96
  4. Step 4: Simplify right side
    58,666.66x = 1,867,179,206.92
  5. Step 5: Solve for x
    x = 1,867,179,206.92/58,666.66
  6. Step 6: Final answer
    x = 31,826.92

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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.