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Finding the Third Proportional to 18,186,721.50 and 39,400,518

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Solution

The third proportional to 18,186,721.50 and 39,400,518 is: 85,359,025.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,186,721.50 : 39,400,518 = 39,400,518 : x
  2. Step 2: Convert to fraction form
    18,186,721.50/39,400,518 = 39,400,518/x
  3. Step 3: Cross multiply
    18,186,721.50x = 39,400,518 × 39,400,518
  4. Step 4: Simplify right side
    18,186,721.50x = 1,552,400,818,668,324
  5. Step 5: Solve for x
    x = 1,552,400,818,668,324/18,186,721.50
  6. Step 6: Final answer
    x = 85,359,025.19

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.