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Finding the Fourth Proportional to 124,786.60, 187,124.28 and 36,019

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Solution

The fourth proportional to 124,786.60, 187,124.28 and 36,019 is: 54,012.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,786.60 : 187,124.28 = 36,019 : x
  2. Step 2: Convert to fraction form
    124,786.60/187,124.28 = 36,019/x
  3. Step 3: Cross multiply
    124,786.60x = 187,124.28 × 36,019
  4. Step 4: Simplify right side
    124,786.60x = 6,740,029,441.32
  5. Step 5: Solve for x
    x = 6,740,029,441.32/124,786.60
  6. Step 6: Final answer
    x = 54,012.45

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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.