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Finding the Fourth Proportional to 228,578.04, 342,889.61 and 78,798.62

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Solution

The fourth proportional to 228,578.04, 342,889.61 and 78,798.62 is: 118,205.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,578.04 : 342,889.61 = 78,798.62 : x
  2. Step 2: Convert to fraction form
    228,578.04/342,889.61 = 78,798.62/x
  3. Step 3: Cross multiply
    228,578.04x = 342,889.61 × 78,798.62
  4. Step 4: Simplify right side
    228,578.04x = 27,019,228,543.57
  5. Step 5: Solve for x
    x = 27,019,228,543.57/228,578.04
  6. Step 6: Final answer
    x = 118,205.71

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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.