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Finding the Fourth Proportional to 48,706.28, 67,214.10 and 28,559

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Solution

The fourth proportional to 48,706.28, 67,214.10 and 28,559 is: 39,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,706.28 : 67,214.10 = 28,559 : x
  2. Step 2: Convert to fraction form
    48,706.28/67,214.10 = 28,559/x
  3. Step 3: Cross multiply
    48,706.28x = 67,214.10 × 28,559
  4. Step 4: Simplify right side
    48,706.28x = 1,919,567,481.90
  5. Step 5: Solve for x
    x = 1,919,567,481.90/48,706.28
  6. Step 6: Final answer
    x = 39,411.09

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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.