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Finding the Fourth Proportional to 118,794.84, 178,155 and 38,814.57

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Solution

The fourth proportional to 118,794.84, 178,155 and 38,814.57 is: 58,209.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.84 : 178,155 = 38,814.57 : x
  2. Step 2: Convert to fraction form
    118,794.84/178,155 = 38,814.57/x
  3. Step 3: Cross multiply
    118,794.84x = 178,155 × 38,814.57
  4. Step 4: Simplify right side
    118,794.84x = 6,915,009,718.35
  5. Step 5: Solve for x
    x = 6,915,009,718.35/118,794.84
  6. Step 6: Final answer
    x = 58,209.68

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1.5x scale

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.