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Finding the Fourth Proportional to 38,603.52, 53,272.35 and 21,836.52

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Solution

The fourth proportional to 38,603.52, 53,272.35 and 21,836.52 is: 30,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,603.52 : 53,272.35 = 21,836.52 : x
  2. Step 2: Convert to fraction form
    38,603.52/53,272.35 = 21,836.52/x
  3. Step 3: Cross multiply
    38,603.52x = 53,272.35 × 21,836.52
  4. Step 4: Simplify right side
    38,603.52x = 1,163,282,736.22
  5. Step 5: Solve for x
    x = 1,163,282,736.22/38,603.52
  6. Step 6: Final answer
    x = 30,134.11

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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.