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Finding the Fourth Proportional to 207,618.95, 311,461.97 and 87,693.93

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Solution

The fourth proportional to 207,618.95, 311,461.97 and 87,693.93 is: 131,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,618.95 : 311,461.97 = 87,693.93 : x
  2. Step 2: Convert to fraction form
    207,618.95/311,461.97 = 87,693.93/x
  3. Step 3: Cross multiply
    207,618.95x = 311,461.97 × 87,693.93
  4. Step 4: Simplify right side
    207,618.95x = 27,313,324,194.84
  5. Step 5: Solve for x
    x = 27,313,324,194.84/207,618.95
  6. Step 6: Final answer
    x = 131,555.06

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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.