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Finding the Fourth Proportional to 28,893.92, 39,876.40 and 17,560.92

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Solution

The fourth proportional to 28,893.92, 39,876.40 and 17,560.92 is: 24,235.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.92 : 39,876.40 = 17,560.92 : x
  2. Step 2: Convert to fraction form
    28,893.92/39,876.40 = 17,560.92/x
  3. Step 3: Cross multiply
    28,893.92x = 39,876.40 × 17,560.92
  4. Step 4: Simplify right side
    28,893.92x = 700,266,270.29
  5. Step 5: Solve for x
    x = 700,266,270.29/28,893.92
  6. Step 6: Final answer
    x = 24,235.77

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1.5x scale

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.