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Finding the Fourth Proportional to 109,679.46, 151,357.72 and 59,378.46

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Solution

The fourth proportional to 109,679.46, 151,357.72 and 59,378.46 is: 81,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,679.46 : 151,357.72 = 59,378.46 : x
  2. Step 2: Convert to fraction form
    109,679.46/151,357.72 = 59,378.46/x
  3. Step 3: Cross multiply
    109,679.46x = 151,357.72 × 59,378.46
  4. Step 4: Simplify right side
    109,679.46x = 8,987,388,322.71
  5. Step 5: Solve for x
    x = 8,987,388,322.71/109,679.46
  6. Step 6: Final answer
    x = 81,942.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.