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Finding the Fourth Proportional to 3,812,403.22, 5,718,788.75 and 1,253,561.51

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Solution

The fourth proportional to 3,812,403.22, 5,718,788.75 and 1,253,561.51 is: 1,880,402.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812,403.22 : 5,718,788.75 = 1,253,561.51 : x
  2. Step 2: Convert to fraction form
    3,812,403.22/5,718,788.75 = 1,253,561.51/x
  3. Step 3: Cross multiply
    3,812,403.22x = 5,718,788.75 × 1,253,561.51
  4. Step 4: Simplify right side
    3,812,403.22x = 7,168,853,468,850.18
  5. Step 5: Solve for x
    x = 7,168,853,468,850.18/3,812,403.22
  6. Step 6: Final answer
    x = 1,880,402.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.