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Finding the Fourth Proportional to 118,713.20, 163,824.21 and 64,998.21

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Solution

The fourth proportional to 118,713.20, 163,824.21 and 64,998.21 is: 89,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.20 : 163,824.21 = 64,998.21 : x
  2. Step 2: Convert to fraction form
    118,713.20/163,824.21 = 64,998.21/x
  3. Step 3: Cross multiply
    118,713.20x = 163,824.21 × 64,998.21
  4. Step 4: Simplify right side
    118,713.20x = 10,648,280,404.66
  5. Step 5: Solve for x
    x = 10,648,280,404.66/118,713.20
  6. Step 6: Final answer
    x = 89,697.53

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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.