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Finding the Fourth Proportional to 43,284.49, 64,920.24 and 13,698.49

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Solution

The fourth proportional to 43,284.49, 64,920.24 and 13,698.49 is: 20,545.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,284.49 : 64,920.24 = 13,698.49 : x
  2. Step 2: Convert to fraction form
    43,284.49/64,920.24 = 13,698.49/x
  3. Step 3: Cross multiply
    43,284.49x = 64,920.24 × 13,698.49
  4. Step 4: Simplify right side
    43,284.49x = 889,309,258.44
  5. Step 5: Solve for x
    x = 889,309,258.44/43,284.49
  6. Step 6: Final answer
    x = 20,545.68

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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.