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Finding the Fourth Proportional to 111,400.63, 153,741.36 and 63,003.52

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Solution

The fourth proportional to 111,400.63, 153,741.36 and 63,003.52 is: 86,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,400.63 : 153,741.36 = 63,003.52 : x
  2. Step 2: Convert to fraction form
    111,400.63/153,741.36 = 63,003.52/x
  3. Step 3: Cross multiply
    111,400.63x = 153,741.36 × 63,003.52
  4. Step 4: Simplify right side
    111,400.63x = 9,686,246,849.59
  5. Step 5: Solve for x
    x = 9,686,246,849.59/111,400.63
  6. Step 6: Final answer
    x = 86,949.66

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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.