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Finding the Fourth Proportional to 19,253.71, 28,831.29 and 10,921.24

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Solution

The fourth proportional to 19,253.71, 28,831.29 and 10,921.24 is: 16,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253.71 : 28,831.29 = 10,921.24 : x
  2. Step 2: Convert to fraction form
    19,253.71/28,831.29 = 10,921.24/x
  3. Step 3: Cross multiply
    19,253.71x = 28,831.29 × 10,921.24
  4. Step 4: Simplify right side
    19,253.71x = 314,873,437.60
  5. Step 5: Solve for x
    x = 314,873,437.60/19,253.71
  6. Step 6: Final answer
    x = 16,353.91

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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.