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Finding the Fourth Proportional to 22,292.01, 30,762.79 and 12,221.08

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Solution

The fourth proportional to 22,292.01, 30,762.79 and 12,221.08 is: 16,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,292.01 : 30,762.79 = 12,221.08 : x
  2. Step 2: Convert to fraction form
    22,292.01/30,762.79 = 12,221.08/x
  3. Step 3: Cross multiply
    22,292.01x = 30,762.79 × 12,221.08
  4. Step 4: Simplify right side
    22,292.01x = 375,954,410.15
  5. Step 5: Solve for x
    x = 375,954,410.15/22,292.01
  6. Step 6: Final answer
    x = 16,864.98

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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.