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Finding the Fourth Proportional to 66,019.81, 99,037.40 and 23,919.71

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Solution

The fourth proportional to 66,019.81, 99,037.40 and 23,919.71 is: 35,882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019.81 : 99,037.40 = 23,919.71 : x
  2. Step 2: Convert to fraction form
    66,019.81/99,037.40 = 23,919.71/x
  3. Step 3: Cross multiply
    66,019.81x = 99,037.40 × 23,919.71
  4. Step 4: Simplify right side
    66,019.81x = 2,368,945,887.15
  5. Step 5: Solve for x
    x = 2,368,945,887.15/66,019.81
  6. Step 6: Final answer
    x = 35,882.35

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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.