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Finding the Fourth Proportional to 873,847.20, 1,225,874.40 and 873,847.20

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Solution

The fourth proportional to 873,847.20, 1,225,874.40 and 873,847.20 is: 1,225,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,847.20 : 1,225,874.40 = 873,847.20 : x
  2. Step 2: Convert to fraction form
    873,847.20/1,225,874.40 = 873,847.20/x
  3. Step 3: Cross multiply
    873,847.20x = 1,225,874.40 × 873,847.20
  4. Step 4: Simplify right side
    873,847.20x = 1,071,226,911,991.68
  5. Step 5: Solve for x
    x = 1,071,226,911,991.68/873,847.20
  6. Step 6: Final answer
    x = 1,225,874.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.