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Finding the Fourth Proportional to 3,886,767.84, 5,831,004.72 and 1,191,295.80

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Solution

The fourth proportional to 3,886,767.84, 5,831,004.72 and 1,191,295.80 is: 1,787,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886,767.84 : 5,831,004.72 = 1,191,295.80 : x
  2. Step 2: Convert to fraction form
    3,886,767.84/5,831,004.72 = 1,191,295.80/x
  3. Step 3: Cross multiply
    3,886,767.84x = 5,831,004.72 × 1,191,295.80
  4. Step 4: Simplify right side
    3,886,767.84x = 6,946,451,432,716.18
  5. Step 5: Solve for x
    x = 6,946,451,432,716.18/3,886,767.84
  6. Step 6: Final answer
    x = 1,787,205.13

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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.