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Finding the Third Proportional to 915,540.47 and 1,988,700.61

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Solution

The third proportional to 915,540.47 and 1,988,700.61 is: 4,319,776.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,540.47 : 1,988,700.61 = 1,988,700.61 : x
  2. Step 2: Convert to fraction form
    915,540.47/1,988,700.61 = 1,988,700.61/x
  3. Step 3: Cross multiply
    915,540.47x = 1,988,700.61 × 1,988,700.61
  4. Step 4: Simplify right side
    915,540.47x = 3,954,930,113,728.50
  5. Step 5: Solve for x
    x = 3,954,930,113,728.50/915,540.47
  6. Step 6: Final answer
    x = 4,319,776.40

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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.