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Finding the Fourth Proportional to 20,303.88, 28,024.08 and 11,923.08

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Solution

The fourth proportional to 20,303.88, 28,024.08 and 11,923.08 is: 16,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.88 : 28,024.08 = 11,923.08 : x
  2. Step 2: Convert to fraction form
    20,303.88/28,024.08 = 11,923.08/x
  3. Step 3: Cross multiply
    20,303.88x = 28,024.08 × 11,923.08
  4. Step 4: Simplify right side
    20,303.88x = 334,133,347.77
  5. Step 5: Solve for x
    x = 334,133,347.77/20,303.88
  6. Step 6: Final answer
    x = 16,456.63

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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.