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Finding the Fourth Proportional to 986,868, 1,361,956.98 and 784,588.26

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Solution

The fourth proportional to 986,868, 1,361,956.98 and 784,588.26 is: 1,082,794.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,868 : 1,361,956.98 = 784,588.26 : x
  2. Step 2: Convert to fraction form
    986,868/1,361,956.98 = 784,588.26/x
  3. Step 3: Cross multiply
    986,868x = 1,361,956.98 × 784,588.26
  4. Step 4: Simplify right side
    986,868x = 1,068,575,457,133.05
  5. Step 5: Solve for x
    x = 1,068,575,457,133.05/986,868
  6. Step 6: Final answer
    x = 1,082,794.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.