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Finding the Fourth Proportional to 207,539.11, 311,277.68 and 57,763.78

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Solution

The fourth proportional to 207,539.11, 311,277.68 and 57,763.78 is: 86,637.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,539.11 : 311,277.68 = 57,763.78 : x
  2. Step 2: Convert to fraction form
    207,539.11/311,277.68 = 57,763.78/x
  3. Step 3: Cross multiply
    207,539.11x = 311,277.68 × 57,763.78
  4. Step 4: Simplify right side
    207,539.11x = 17,980,576,651.89
  5. Step 5: Solve for x
    x = 17,980,576,651.89/207,539.11
  6. Step 6: Final answer
    x = 86,637.05

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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.