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Finding the Fourth Proportional to 894,812.80, 1,236,087.13 and 861,592.64

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Solution

The fourth proportional to 894,812.80, 1,236,087.13 and 861,592.64 is: 1,190,197.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    894,812.80 : 1,236,087.13 = 861,592.64 : x
  2. Step 2: Convert to fraction form
    894,812.80/1,236,087.13 = 861,592.64/x
  3. Step 3: Cross multiply
    894,812.80x = 1,236,087.13 × 861,592.64
  4. Step 4: Simplify right side
    894,812.80x = 1,065,003,569,298.76
  5. Step 5: Solve for x
    x = 1,065,003,569,298.76/894,812.80
  6. Step 6: Final answer
    x = 1,190,197.07

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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.