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Finding the Fourth Proportional to 28,697.52, 39,603.60 and 16,122

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Solution

The fourth proportional to 28,697.52, 39,603.60 and 16,122 is: 22,248.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.52 : 39,603.60 = 16,122 : x
  2. Step 2: Convert to fraction form
    28,697.52/39,603.60 = 16,122/x
  3. Step 3: Cross multiply
    28,697.52x = 39,603.60 × 16,122
  4. Step 4: Simplify right side
    28,697.52x = 638,489,239.20
  5. Step 5: Solve for x
    x = 638,489,239.20/28,697.52
  6. Step 6: Final answer
    x = 22,248.93

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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.