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Finding the Fourth Proportional to 143,912.13, 215,868.71 and 44,071.89

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Solution

The fourth proportional to 143,912.13, 215,868.71 and 44,071.89 is: 66,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,912.13 : 215,868.71 = 44,071.89 : x
  2. Step 2: Convert to fraction form
    143,912.13/215,868.71 = 44,071.89/x
  3. Step 3: Cross multiply
    143,912.13x = 215,868.71 × 44,071.89
  4. Step 4: Simplify right side
    143,912.13x = 9,513,742,151.74
  5. Step 5: Solve for x
    x = 9,513,742,151.74/143,912.13
  6. Step 6: Final answer
    x = 66,107.99

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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.