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Finding the Fourth Proportional to 18,953.10, 26,154.95 and 10,456.04

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Solution

The fourth proportional to 18,953.10, 26,154.95 and 10,456.04 is: 14,429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.10 : 26,154.95 = 10,456.04 : x
  2. Step 2: Convert to fraction form
    18,953.10/26,154.95 = 10,456.04/x
  3. Step 3: Cross multiply
    18,953.10x = 26,154.95 × 10,456.04
  4. Step 4: Simplify right side
    18,953.10x = 273,477,098.76
  5. Step 5: Solve for x
    x = 273,477,098.76/18,953.10
  6. Step 6: Final answer
    x = 14,429.15

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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.