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Finding the Fourth Proportional to 19,533.71, 26,968.09 and 12,831.06

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Solution

The fourth proportional to 19,533.71, 26,968.09 and 12,831.06 is: 17,714.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,533.71 : 26,968.09 = 12,831.06 : x
  2. Step 2: Convert to fraction form
    19,533.71/26,968.09 = 12,831.06/x
  3. Step 3: Cross multiply
    19,533.71x = 26,968.09 × 12,831.06
  4. Step 4: Simplify right side
    19,533.71x = 346,029,122.29
  5. Step 5: Solve for x
    x = 346,029,122.29/19,533.71
  6. Step 6: Final answer
    x = 17,714.46

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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.