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Finding the Fourth Proportional to 44,005.80, 66,018.42 and 21,831.24

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Solution

The fourth proportional to 44,005.80, 66,018.42 and 21,831.24 is: 32,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,005.80 : 66,018.42 = 21,831.24 : x
  2. Step 2: Convert to fraction form
    44,005.80/66,018.42 = 21,831.24/x
  3. Step 3: Cross multiply
    44,005.80x = 66,018.42 × 21,831.24
  4. Step 4: Simplify right side
    44,005.80x = 1,441,263,971.44
  5. Step 5: Solve for x
    x = 1,441,263,971.44/44,005.80
  6. Step 6: Final answer
    x = 32,751.68

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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.