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Finding the Fourth Proportional to 1,593,632, 2,199,212.21 and 878,240

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Solution

The fourth proportional to 1,593,632, 2,199,212.21 and 878,240 is: 1,211,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593,632 : 2,199,212.21 = 878,240 : x
  2. Step 2: Convert to fraction form
    1,593,632/2,199,212.21 = 878,240/x
  3. Step 3: Cross multiply
    1,593,632x = 2,199,212.21 × 878,240
  4. Step 4: Simplify right side
    1,593,632x = 1,931,436,131,310.40
  5. Step 5: Solve for x
    x = 1,931,436,131,310.40/1,593,632
  6. Step 6: Final answer
    x = 1,211,971.23

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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.