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Finding the Fourth Proportional to 60,722.47, 83,768.40 and 39,493.99

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Solution

The fourth proportional to 60,722.47, 83,768.40 and 39,493.99 is: 54,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,722.47 : 83,768.40 = 39,493.99 : x
  2. Step 2: Convert to fraction form
    60,722.47/83,768.40 = 39,493.99/x
  3. Step 3: Cross multiply
    60,722.47x = 83,768.40 × 39,493.99
  4. Step 4: Simplify right side
    60,722.47x = 3,308,348,351.92
  5. Step 5: Solve for x
    x = 3,308,348,351.92/60,722.47
  6. Step 6: Final answer
    x = 54,483.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.