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Finding the Fourth Proportional to 39,388.74, 59,053.02 and 19,681.11

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Solution

The fourth proportional to 39,388.74, 59,053.02 and 19,681.11 is: 29,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,388.74 : 59,053.02 = 19,681.11 : x
  2. Step 2: Convert to fraction form
    39,388.74/59,053.02 = 19,681.11/x
  3. Step 3: Cross multiply
    39,388.74x = 59,053.02 × 19,681.11
  4. Step 4: Simplify right side
    39,388.74x = 1,162,228,982.45
  5. Step 5: Solve for x
    x = 1,162,228,982.45/39,388.74
  6. Step 6: Final answer
    x = 29,506.63

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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.