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Finding the Fourth Proportional to 118,155.78, 177,162.39 and 47,089.35

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Solution

The fourth proportional to 118,155.78, 177,162.39 and 47,089.35 is: 70,605.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,155.78 : 177,162.39 = 47,089.35 : x
  2. Step 2: Convert to fraction form
    118,155.78/177,162.39 = 47,089.35/x
  3. Step 3: Cross multiply
    118,155.78x = 177,162.39 × 47,089.35
  4. Step 4: Simplify right side
    118,155.78x = 8,342,461,789.55
  5. Step 5: Solve for x
    x = 8,342,461,789.55/118,155.78
  6. Step 6: Final answer
    x = 70,605.62

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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.