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Finding the Fourth Proportional to 124,706.84, 187,077.87 and 40,438.69

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Solution

The fourth proportional to 124,706.84, 187,077.87 and 40,438.69 is: 60,663.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,706.84 : 187,077.87 = 40,438.69 : x
  2. Step 2: Convert to fraction form
    124,706.84/187,077.87 = 40,438.69/x
  3. Step 3: Cross multiply
    124,706.84x = 187,077.87 × 40,438.69
  4. Step 4: Simplify right side
    124,706.84x = 7,565,183,523.10
  5. Step 5: Solve for x
    x = 7,565,183,523.10/124,706.84
  6. Step 6: Final answer
    x = 60,663.74

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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.