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Finding the Fourth Proportional to 19,355.51, 26,710.90 and 10,859.51

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Solution

The fourth proportional to 19,355.51, 26,710.90 and 10,859.51 is: 14,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.51 : 26,710.90 = 10,859.51 : x
  2. Step 2: Convert to fraction form
    19,355.51/26,710.90 = 10,859.51/x
  3. Step 3: Cross multiply
    19,355.51x = 26,710.90 × 10,859.51
  4. Step 4: Simplify right side
    19,355.51x = 290,067,325.29
  5. Step 5: Solve for x
    x = 290,067,325.29/19,355.51
  6. Step 6: Final answer
    x = 14,986.29

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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.