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Finding the Fourth Proportional to 19,651.30, 27,117.90 and 10,698.58

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Solution

The fourth proportional to 19,651.30, 27,117.90 and 10,698.58 is: 14,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,651.30 : 27,117.90 = 10,698.58 : x
  2. Step 2: Convert to fraction form
    19,651.30/27,117.90 = 10,698.58/x
  3. Step 3: Cross multiply
    19,651.30x = 27,117.90 × 10,698.58
  4. Step 4: Simplify right side
    19,651.30x = 290,123,022.58
  5. Step 5: Solve for x
    x = 290,123,022.58/19,651.30
  6. Step 6: Final answer
    x = 14,763.55

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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.