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Finding the Fourth Proportional to 129,368.55, 194,054.52 and 40,622.01

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Solution

The fourth proportional to 129,368.55, 194,054.52 and 40,622.01 is: 60,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,368.55 : 194,054.52 = 40,622.01 : x
  2. Step 2: Convert to fraction form
    129,368.55/194,054.52 = 40,622.01/x
  3. Step 3: Cross multiply
    129,368.55x = 194,054.52 × 40,622.01
  4. Step 4: Simplify right side
    129,368.55x = 7,882,884,651.99
  5. Step 5: Solve for x
    x = 7,882,884,651.99/129,368.55
  6. Step 6: Final answer
    x = 60,933.55

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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.