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Finding the Fourth Proportional to 85,515.68, 118,009.68 and 47,793.44

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Solution

The fourth proportional to 85,515.68, 118,009.68 and 47,793.44 is: 65,953.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.68 : 118,009.68 = 47,793.44 : x
  2. Step 2: Convert to fraction form
    85,515.68/118,009.68 = 47,793.44/x
  3. Step 3: Cross multiply
    85,515.68x = 118,009.68 × 47,793.44
  4. Step 4: Simplify right side
    85,515.68x = 5,640,088,560.50
  5. Step 5: Solve for x
    x = 5,640,088,560.50/85,515.68
  6. Step 6: Final answer
    x = 65,953.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.