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Finding the Fourth Proportional to 111,495.93, 153,859.01 and 63,754.53

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Solution

The fourth proportional to 111,495.93, 153,859.01 and 63,754.53 is: 87,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,495.93 : 153,859.01 = 63,754.53 : x
  2. Step 2: Convert to fraction form
    111,495.93/153,859.01 = 63,754.53/x
  3. Step 3: Cross multiply
    111,495.93x = 153,859.01 × 63,754.53
  4. Step 4: Simplify right side
    111,495.93x = 9,809,208,550.04
  5. Step 5: Solve for x
    x = 9,809,208,550.04/111,495.93
  6. Step 6: Final answer
    x = 87,978.18

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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.