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Finding the Fourth Proportional to 111,480.15, 153,798.82 and 63,707.87

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Solution

The fourth proportional to 111,480.15, 153,798.82 and 63,707.87 is: 87,891.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,480.15 : 153,798.82 = 63,707.87 : x
  2. Step 2: Convert to fraction form
    111,480.15/153,798.82 = 63,707.87/x
  3. Step 3: Cross multiply
    111,480.15x = 153,798.82 × 63,707.87
  4. Step 4: Simplify right side
    111,480.15x = 9,798,195,455.94
  5. Step 5: Solve for x
    x = 9,798,195,455.94/111,480.15
  6. Step 6: Final answer
    x = 87,891.84

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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.