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Finding the Fourth Proportional to 18,953.49, 26,155.92 and 10,455.92

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Solution

The fourth proportional to 18,953.49, 26,155.92 and 10,455.92 is: 14,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.49 : 26,155.92 = 10,455.92 : x
  2. Step 2: Convert to fraction form
    18,953.49/26,155.92 = 10,455.92/x
  3. Step 3: Cross multiply
    18,953.49x = 26,155.92 × 10,455.92
  4. Step 4: Simplify right side
    18,953.49x = 273,484,076.27
  5. Step 5: Solve for x
    x = 273,484,076.27/18,953.49
  6. Step 6: Final answer
    x = 14,429.22

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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.