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Finding the Fourth Proportional to 98,726.56, 136,245.80 and 54,014.56

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Solution

The fourth proportional to 98,726.56, 136,245.80 and 54,014.56 is: 74,541.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,726.56 : 136,245.80 = 54,014.56 : x
  2. Step 2: Convert to fraction form
    98,726.56/136,245.80 = 54,014.56/x
  3. Step 3: Cross multiply
    98,726.56x = 136,245.80 × 54,014.56
  4. Step 4: Simplify right side
    98,726.56x = 7,359,256,938.85
  5. Step 5: Solve for x
    x = 7,359,256,938.85/98,726.56
  6. Step 6: Final answer
    x = 74,541.81

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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.