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Finding the Fourth Proportional to 143,931.24, 215,907.24 and 44,078.46

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Solution

The fourth proportional to 143,931.24, 215,907.24 and 44,078.46 is: 66,120.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,931.24 : 215,907.24 = 44,078.46 : x
  2. Step 2: Convert to fraction form
    143,931.24/215,907.24 = 44,078.46/x
  3. Step 3: Cross multiply
    143,931.24x = 215,907.24 × 44,078.46
  4. Step 4: Simplify right side
    143,931.24x = 9,516,858,642.05
  5. Step 5: Solve for x
    x = 9,516,858,642.05/143,931.24
  6. Step 6: Final answer
    x = 66,120.87

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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.