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Finding the Fourth Proportional to 341,661.78, 512,491.86 and 92,343.78

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Solution

The fourth proportional to 341,661.78, 512,491.86 and 92,343.78 is: 138,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,661.78 : 512,491.86 = 92,343.78 : x
  2. Step 2: Convert to fraction form
    341,661.78/512,491.86 = 92,343.78/x
  3. Step 3: Cross multiply
    341,661.78x = 512,491.86 × 92,343.78
  4. Step 4: Simplify right side
    341,661.78x = 47,325,435,571.63
  5. Step 5: Solve for x
    x = 47,325,435,571.63/341,661.78
  6. Step 6: Final answer
    x = 138,515.45

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1.5x scale

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.