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Finding the Fourth Proportional to 18,422.69, 25,424.64 and 10,465.52

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Solution

The fourth proportional to 18,422.69, 25,424.64 and 10,465.52 is: 14,443.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.69 : 25,424.64 = 10,465.52 : x
  2. Step 2: Convert to fraction form
    18,422.69/25,424.64 = 10,465.52/x
  3. Step 3: Cross multiply
    18,422.69x = 25,424.64 × 10,465.52
  4. Step 4: Simplify right side
    18,422.69x = 266,081,951.29
  5. Step 5: Solve for x
    x = 266,081,951.29/18,422.69
  6. Step 6: Final answer
    x = 14,443.17

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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.