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Finding the Fourth Proportional to 28,689.52, 39,592.56 and 16,114

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Solution

The fourth proportional to 28,689.52, 39,592.56 and 16,114 is: 22,237.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,689.52 : 39,592.56 = 16,114 : x
  2. Step 2: Convert to fraction form
    28,689.52/39,592.56 = 16,114/x
  3. Step 3: Cross multiply
    28,689.52x = 39,592.56 × 16,114
  4. Step 4: Simplify right side
    28,689.52x = 637,994,511.84
  5. Step 5: Solve for x
    x = 637,994,511.84/28,689.52
  6. Step 6: Final answer
    x = 22,237.89

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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.