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Finding the Fourth Proportional to 111,501.63, 153,876.90 and 63,754.95

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Solution

The fourth proportional to 111,501.63, 153,876.90 and 63,754.95 is: 87,984.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,501.63 : 153,876.90 = 63,754.95 : x
  2. Step 2: Convert to fraction form
    111,501.63/153,876.90 = 63,754.95/x
  3. Step 3: Cross multiply
    111,501.63x = 153,876.90 × 63,754.95
  4. Step 4: Simplify right side
    111,501.63x = 9,810,414,065.66
  5. Step 5: Solve for x
    x = 9,810,414,065.66/111,501.63
  6. Step 6: Final answer
    x = 87,984.49

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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.