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Finding the Fourth Proportional to 22,616.63, 31,210.21 and 13,662.57

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Solution

The fourth proportional to 22,616.63, 31,210.21 and 13,662.57 is: 18,853.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,616.63 : 31,210.21 = 13,662.57 : x
  2. Step 2: Convert to fraction form
    22,616.63/31,210.21 = 13,662.57/x
  3. Step 3: Cross multiply
    22,616.63x = 31,210.21 × 13,662.57
  4. Step 4: Simplify right side
    22,616.63x = 426,411,678.84
  5. Step 5: Solve for x
    x = 426,411,678.84/22,616.63
  6. Step 6: Final answer
    x = 18,853.90

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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.