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Finding the Fourth Proportional to 13,892.16, 20,831.93 and 5,990.94

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Solution

The fourth proportional to 13,892.16, 20,831.93 and 5,990.94 is: 8,983.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,892.16 : 20,831.93 = 5,990.94 : x
  2. Step 2: Convert to fraction form
    13,892.16/20,831.93 = 5,990.94/x
  3. Step 3: Cross multiply
    13,892.16x = 20,831.93 × 5,990.94
  4. Step 4: Simplify right side
    13,892.16x = 124,802,810.33
  5. Step 5: Solve for x
    x = 124,802,810.33/13,892.16
  6. Step 6: Final answer
    x = 8,983.69

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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.