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Finding the Fourth Proportional to 22,117.60, 33,154.80 and 19,784.80

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Solution

The fourth proportional to 22,117.60, 33,154.80 and 19,784.80 is: 29,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,117.60 : 33,154.80 = 19,784.80 : x
  2. Step 2: Convert to fraction form
    22,117.60/33,154.80 = 19,784.80/x
  3. Step 3: Cross multiply
    22,117.60x = 33,154.80 × 19,784.80
  4. Step 4: Simplify right side
    22,117.60x = 655,961,087.04
  5. Step 5: Solve for x
    x = 655,961,087.04/22,117.60
  6. Step 6: Final answer
    x = 29,657.88

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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.