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Finding the Fourth Proportional to 111,129.44, 153,357.44 and 60,141.05

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Solution

The fourth proportional to 111,129.44, 153,357.44 and 60,141.05 is: 82,994.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,129.44 : 153,357.44 = 60,141.05 : x
  2. Step 2: Convert to fraction form
    111,129.44/153,357.44 = 60,141.05/x
  3. Step 3: Cross multiply
    111,129.44x = 153,357.44 × 60,141.05
  4. Step 4: Simplify right side
    111,129.44x = 9,223,076,974.51
  5. Step 5: Solve for x
    x = 9,223,076,974.51/111,129.44
  6. Step 6: Final answer
    x = 82,994.01

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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.