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Finding the Fourth Proportional to 1,591,212, 2,195,872.64 and 875,820

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Solution

The fourth proportional to 1,591,212, 2,195,872.64 and 875,820 is: 1,208,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591,212 : 2,195,872.64 = 875,820 : x
  2. Step 2: Convert to fraction form
    1,591,212/2,195,872.64 = 875,820/x
  3. Step 3: Cross multiply
    1,591,212x = 2,195,872.64 × 875,820
  4. Step 4: Simplify right side
    1,591,212x = 1,923,189,175,564.80
  5. Step 5: Solve for x
    x = 1,923,189,175,564.80/1,591,212
  6. Step 6: Final answer
    x = 1,208,631.64

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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.