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Finding the Fourth Proportional to 18,869.48, 26,041.20 and 10,486.52

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Solution

The fourth proportional to 18,869.48, 26,041.20 and 10,486.52 is: 14,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.48 : 26,041.20 = 10,486.52 : x
  2. Step 2: Convert to fraction form
    18,869.48/26,041.20 = 10,486.52/x
  3. Step 3: Cross multiply
    18,869.48x = 26,041.20 × 10,486.52
  4. Step 4: Simplify right side
    18,869.48x = 273,081,564.62
  5. Step 5: Solve for x
    x = 273,081,564.62/18,869.48
  6. Step 6: Final answer
    x = 14,472.13

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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.