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Finding the Fourth Proportional to 111,441.92, 153,752.45 and 63,661.43

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Solution

The fourth proportional to 111,441.92, 153,752.45 and 63,661.43 is: 87,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,441.92 : 153,752.45 = 63,661.43 : x
  2. Step 2: Convert to fraction form
    111,441.92/153,752.45 = 63,661.43/x
  3. Step 3: Cross multiply
    111,441.92x = 153,752.45 × 63,661.43
  4. Step 4: Simplify right side
    111,441.92x = 9,788,100,899.08
  5. Step 5: Solve for x
    x = 9,788,100,899.08/111,441.92
  6. Step 6: Final answer
    x = 87,831.41

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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.