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Finding the Fourth Proportional to 1,951,955.16, 2,923,668.48 and 811,258.88

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Solution

The fourth proportional to 1,951,955.16, 2,923,668.48 and 811,258.88 is: 1,215,116.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951,955.16 : 2,923,668.48 = 811,258.88 : x
  2. Step 2: Convert to fraction form
    1,951,955.16/2,923,668.48 = 811,258.88/x
  3. Step 3: Cross multiply
    1,951,955.16x = 2,923,668.48 × 811,258.88
  4. Step 4: Simplify right side
    1,951,955.16x = 2,371,852,016,576.10
  5. Step 5: Solve for x
    x = 2,371,852,016,576.10/1,951,955.16
  6. Step 6: Final answer
    x = 1,215,116.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.