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Finding the Fourth Proportional to 111,651.44, 153,972.60 and 73,343.12

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Solution

The fourth proportional to 111,651.44, 153,972.60 and 73,343.12 is: 101,143.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,651.44 : 153,972.60 = 73,343.12 : x
  2. Step 2: Convert to fraction form
    111,651.44/153,972.60 = 73,343.12/x
  3. Step 3: Cross multiply
    111,651.44x = 153,972.60 × 73,343.12
  4. Step 4: Simplify right side
    111,651.44x = 11,292,830,878.51
  5. Step 5: Solve for x
    x = 11,292,830,878.51/111,651.44
  6. Step 6: Final answer
    x = 101,143.62

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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.