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Finding the Third Proportional to 45,216.50 and 66,518

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Solution

The third proportional to 45,216.50 and 66,518 is: 97,854.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,216.50 : 66,518 = 66,518 : x
  2. Step 2: Convert to fraction form
    45,216.50/66,518 = 66,518/x
  3. Step 3: Cross multiply
    45,216.50x = 66,518 × 66,518
  4. Step 4: Simplify right side
    45,216.50x = 4,424,644,324
  5. Step 5: Solve for x
    x = 4,424,644,324/45,216.50
  6. Step 6: Final answer
    x = 97,854.64

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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.