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Finding the Fourth Proportional to 185,783.38, 278,603.76 and 79,099.70

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Solution

The fourth proportional to 185,783.38, 278,603.76 and 79,099.70 is: 118,619.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,783.38 : 278,603.76 = 79,099.70 : x
  2. Step 2: Convert to fraction form
    185,783.38/278,603.76 = 79,099.70/x
  3. Step 3: Cross multiply
    185,783.38x = 278,603.76 × 79,099.70
  4. Step 4: Simplify right side
    185,783.38x = 22,037,472,441.85
  5. Step 5: Solve for x
    x = 22,037,472,441.85/185,783.38
  6. Step 6: Final answer
    x = 118,619.18

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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.