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Finding the Fourth Proportional to 16,465.92, 22,721.76 and 9,389.76

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Solution

The fourth proportional to 16,465.92, 22,721.76 and 9,389.76 is: 12,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,465.92 : 22,721.76 = 9,389.76 : x
  2. Step 2: Convert to fraction form
    16,465.92/22,721.76 = 9,389.76/x
  3. Step 3: Cross multiply
    16,465.92x = 22,721.76 × 9,389.76
  4. Step 4: Simplify right side
    16,465.92x = 213,351,873.18
  5. Step 5: Solve for x
    x = 213,351,873.18/16,465.92
  6. Step 6: Final answer
    x = 12,957.18

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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.