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Finding the Fourth Proportional to 118,793.82, 178,165.65 and 70,783.71

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Solution

The fourth proportional to 118,793.82, 178,165.65 and 70,783.71 is: 106,160.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,793.82 : 178,165.65 = 70,783.71 : x
  2. Step 2: Convert to fraction form
    118,793.82/178,165.65 = 70,783.71/x
  3. Step 3: Cross multiply
    118,793.82x = 178,165.65 × 70,783.71
  4. Step 4: Simplify right side
    118,793.82x = 12,611,225,701.56
  5. Step 5: Solve for x
    x = 12,611,225,701.56/118,793.82
  6. Step 6: Final answer
    x = 106,160.62

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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.