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Finding the Fourth Proportional to 5,155,671.75, 7,734,955.41 and 1,512,487.59

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Solution

The fourth proportional to 5,155,671.75, 7,734,955.41 and 1,512,487.59 is: 2,269,156.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155,671.75 : 7,734,955.41 = 1,512,487.59 : x
  2. Step 2: Convert to fraction form
    5,155,671.75/7,734,955.41 = 1,512,487.59/x
  3. Step 3: Cross multiply
    5,155,671.75x = 7,734,955.41 × 1,512,487.59
  4. Step 4: Simplify right side
    5,155,671.75x = 11,699,024,066,828.36
  5. Step 5: Solve for x
    x = 11,699,024,066,828.36/5,155,671.75
  6. Step 6: Final answer
    x = 2,269,156.11

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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.