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Finding the Fourth Proportional to 22,358.40, 33,374.40 and 19,219.20

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Solution

The fourth proportional to 22,358.40, 33,374.40 and 19,219.20 is: 28,688.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,358.40 : 33,374.40 = 19,219.20 : x
  2. Step 2: Convert to fraction form
    22,358.40/33,374.40 = 19,219.20/x
  3. Step 3: Cross multiply
    22,358.40x = 33,374.40 × 19,219.20
  4. Step 4: Simplify right side
    22,358.40x = 641,429,268.48
  5. Step 5: Solve for x
    x = 641,429,268.48/22,358.40
  6. Step 6: Final answer
    x = 28,688.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.