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Finding the Fourth Proportional to 60,576.99, 90,865.89 and 21,133.95

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Solution

The fourth proportional to 60,576.99, 90,865.89 and 21,133.95 is: 31,701.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,576.99 : 90,865.89 = 21,133.95 : x
  2. Step 2: Convert to fraction form
    60,576.99/90,865.89 = 21,133.95/x
  3. Step 3: Cross multiply
    60,576.99x = 90,865.89 × 21,133.95
  4. Step 4: Simplify right side
    60,576.99x = 1,920,355,175.97
  5. Step 5: Solve for x
    x = 1,920,355,175.97/60,576.99
  6. Step 6: Final answer
    x = 31,701.07

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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.