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Finding the Fourth Proportional to 19,165.61, 26,448.51 and 10,782.11

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Solution

The fourth proportional to 19,165.61, 26,448.51 and 10,782.11 is: 14,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.61 : 26,448.51 = 10,782.11 : x
  2. Step 2: Convert to fraction form
    19,165.61/26,448.51 = 10,782.11/x
  3. Step 3: Cross multiply
    19,165.61x = 26,448.51 × 10,782.11
  4. Step 4: Simplify right side
    19,165.61x = 285,170,756.37
  5. Step 5: Solve for x
    x = 285,170,756.37/19,165.61
  6. Step 6: Final answer
    x = 14,879.29

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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.