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Finding the Fourth Proportional to 86,399.71, 129,550.74 and 35,770.11

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Solution

The fourth proportional to 86,399.71, 129,550.74 and 35,770.11 is: 53,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,399.71 : 129,550.74 = 35,770.11 : x
  2. Step 2: Convert to fraction form
    86,399.71/129,550.74 = 35,770.11/x
  3. Step 3: Cross multiply
    86,399.71x = 129,550.74 × 35,770.11
  4. Step 4: Simplify right side
    86,399.71x = 4,634,043,801.64
  5. Step 5: Solve for x
    x = 4,634,043,801.64/86,399.71
  6. Step 6: Final answer
    x = 53,634.94

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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.