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Finding the Fourth Proportional to 1,586,556, 2,189,447.28 and 871,164

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Solution

The fourth proportional to 1,586,556, 2,189,447.28 and 871,164 is: 1,202,206.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,556 : 2,189,447.28 = 871,164 : x
  2. Step 2: Convert to fraction form
    1,586,556/2,189,447.28 = 871,164/x
  3. Step 3: Cross multiply
    1,586,556x = 2,189,447.28 × 871,164
  4. Step 4: Simplify right side
    1,586,556x = 1,907,367,650,233.92
  5. Step 5: Solve for x
    x = 1,907,367,650,233.92/1,586,556
  6. Step 6: Final answer
    x = 1,202,206.32

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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.