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Finding the Third Proportional to 28,711.50 and 42,246

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Solution

The third proportional to 28,711.50 and 42,246 is: 62,160.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.50 : 42,246 = 42,246 : x
  2. Step 2: Convert to fraction form
    28,711.50/42,246 = 42,246/x
  3. Step 3: Cross multiply
    28,711.50x = 42,246 × 42,246
  4. Step 4: Simplify right side
    28,711.50x = 1,784,724,516
  5. Step 5: Solve for x
    x = 1,784,724,516/28,711.50
  6. Step 6: Final answer
    x = 62,160.62

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.