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Finding the Fourth Proportional to 39,851.74, 54,978.90 and 23,715.82

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Solution

The fourth proportional to 39,851.74, 54,978.90 and 23,715.82 is: 32,718.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,851.74 : 54,978.90 = 23,715.82 : x
  2. Step 2: Convert to fraction form
    39,851.74/54,978.90 = 23,715.82/x
  3. Step 3: Cross multiply
    39,851.74x = 54,978.90 × 23,715.82
  4. Step 4: Simplify right side
    39,851.74x = 1,303,869,675.99
  5. Step 5: Solve for x
    x = 1,303,869,675.99/39,851.74
  6. Step 6: Final answer
    x = 32,718.01

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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.