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Finding the Fourth Proportional to 16,398.72, 22,629.60 and 8,946.72

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Solution

The fourth proportional to 16,398.72, 22,629.60 and 8,946.72 is: 12,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,398.72 : 22,629.60 = 8,946.72 : x
  2. Step 2: Convert to fraction form
    16,398.72/22,629.60 = 8,946.72/x
  3. Step 3: Cross multiply
    16,398.72x = 22,629.60 × 8,946.72
  4. Step 4: Simplify right side
    16,398.72x = 202,460,694.91
  5. Step 5: Solve for x
    x = 202,460,694.91/16,398.72
  6. Step 6: Final answer
    x = 12,346.13

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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.