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Finding the Fourth Proportional to 22,690.16, 34,012.45 and 8,646.58

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Solution

The fourth proportional to 22,690.16, 34,012.45 and 8,646.58 is: 12,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.16 : 34,012.45 = 8,646.58 : x
  2. Step 2: Convert to fraction form
    22,690.16/34,012.45 = 8,646.58/x
  3. Step 3: Cross multiply
    22,690.16x = 34,012.45 × 8,646.58
  4. Step 4: Simplify right side
    22,690.16x = 294,091,369.92
  5. Step 5: Solve for x
    x = 294,091,369.92/22,690.16
  6. Step 6: Final answer
    x = 12,961.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.