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Finding the Fourth Proportional to 341,643.12, 512,491.56 and 92,321.52

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Solution

The fourth proportional to 341,643.12, 512,491.56 and 92,321.52 is: 138,489.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,643.12 : 512,491.56 = 92,321.52 : x
  2. Step 2: Convert to fraction form
    341,643.12/512,491.56 = 92,321.52/x
  3. Step 3: Cross multiply
    341,643.12x = 512,491.56 × 92,321.52
  4. Step 4: Simplify right side
    341,643.12x = 47,313,999,806.37
  5. Step 5: Solve for x
    x = 47,313,999,806.37/341,643.12
  6. Step 6: Final answer
    x = 138,489.54

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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.