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Finding the Fourth Proportional to 18,553.68, 27,831.80 and 7,460.38

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Solution

The fourth proportional to 18,553.68, 27,831.80 and 7,460.38 is: 11,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,553.68 : 27,831.80 = 7,460.38 : x
  2. Step 2: Convert to fraction form
    18,553.68/27,831.80 = 7,460.38/x
  3. Step 3: Cross multiply
    18,553.68x = 27,831.80 × 7,460.38
  4. Step 4: Simplify right side
    18,553.68x = 207,635,804.08
  5. Step 5: Solve for x
    x = 207,635,804.08/18,553.68
  6. Step 6: Final answer
    x = 11,191.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.