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Finding the Fourth Proportional to 118,891.40, 178,337.10 and 62,709.80

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Solution

The fourth proportional to 118,891.40, 178,337.10 and 62,709.80 is: 94,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,891.40 : 178,337.10 = 62,709.80 : x
  2. Step 2: Convert to fraction form
    118,891.40/178,337.10 = 62,709.80/x
  3. Step 3: Cross multiply
    118,891.40x = 178,337.10 × 62,709.80
  4. Step 4: Simplify right side
    118,891.40x = 11,183,483,873.58
  5. Step 5: Solve for x
    x = 11,183,483,873.58/118,891.40
  6. Step 6: Final answer
    x = 94,064.70

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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.