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Finding the Fourth Proportional to 19,463.70, 26,860.65 and 10,969.20

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Solution

The fourth proportional to 19,463.70, 26,860.65 and 10,969.20 is: 15,137.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,463.70 : 26,860.65 = 10,969.20 : x
  2. Step 2: Convert to fraction form
    19,463.70/26,860.65 = 10,969.20/x
  3. Step 3: Cross multiply
    19,463.70x = 26,860.65 × 10,969.20
  4. Step 4: Simplify right side
    19,463.70x = 294,639,841.98
  5. Step 5: Solve for x
    x = 294,639,841.98/19,463.70
  6. Step 6: Final answer
    x = 15,137.92

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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.