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Finding the Fourth Proportional to 22,417.80, 30,923.64 and 14,019.72

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Solution

The fourth proportional to 22,417.80, 30,923.64 and 14,019.72 is: 19,339.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,417.80 : 30,923.64 = 14,019.72 : x
  2. Step 2: Convert to fraction form
    22,417.80/30,923.64 = 14,019.72/x
  3. Step 3: Cross multiply
    22,417.80x = 30,923.64 × 14,019.72
  4. Step 4: Simplify right side
    22,417.80x = 433,540,619.56
  5. Step 5: Solve for x
    x = 433,540,619.56/22,417.80
  6. Step 6: Final answer
    x = 19,339.13

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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.