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Finding the Fourth Proportional to 14,204.71, 19,602.49 and 7,831.41

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Solution

The fourth proportional to 14,204.71, 19,602.49 and 7,831.41 is: 10,807.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,204.71 : 19,602.49 = 7,831.41 : x
  2. Step 2: Convert to fraction form
    14,204.71/19,602.49 = 7,831.41/x
  3. Step 3: Cross multiply
    14,204.71x = 19,602.49 × 7,831.41
  4. Step 4: Simplify right side
    14,204.71x = 153,515,136.21
  5. Step 5: Solve for x
    x = 153,515,136.21/14,204.71
  6. Step 6: Final answer
    x = 10,807.34

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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.