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Finding the Fourth Proportional to 16,223.52, 22,390.80 and 15,222.84

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Solution

The fourth proportional to 16,223.52, 22,390.80 and 15,222.84 is: 21,009.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,223.52 : 22,390.80 = 15,222.84 : x
  2. Step 2: Convert to fraction form
    16,223.52/22,390.80 = 15,222.84/x
  3. Step 3: Cross multiply
    16,223.52x = 22,390.80 × 15,222.84
  4. Step 4: Simplify right side
    16,223.52x = 340,851,565.87
  5. Step 5: Solve for x
    x = 340,851,565.87/16,223.52
  6. Step 6: Final answer
    x = 21,009.72

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