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Finding the Third Proportional to 84,455,990 and 130,562,393

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Solution

The third proportional to 84,455,990 and 130,562,393 is: 201,839,306.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,455,990 : 130,562,393 = 130,562,393 : x
  2. Step 2: Convert to fraction form
    84,455,990/130,562,393 = 130,562,393/x
  3. Step 3: Cross multiply
    84,455,990x = 130,562,393 × 130,562,393
  4. Step 4: Simplify right side
    84,455,990x = 17,046,538,465,886,448
  5. Step 5: Solve for x
    x = 17,046,538,465,886,448/84,455,990
  6. Step 6: Final answer
    x = 201,839,306.67

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.