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Finding the Fourth Proportional to 136,062.69, 187,768.76 and 74,811.46

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Solution

The fourth proportional to 136,062.69, 187,768.76 and 74,811.46 is: 103,241.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,062.69 : 187,768.76 = 74,811.46 : x
  2. Step 2: Convert to fraction form
    136,062.69/187,768.76 = 74,811.46/x
  3. Step 3: Cross multiply
    136,062.69x = 187,768.76 × 74,811.46
  4. Step 4: Simplify right side
    136,062.69x = 14,047,255,077.99
  5. Step 5: Solve for x
    x = 14,047,255,077.99/136,062.69
  6. Step 6: Final answer
    x = 103,241.05

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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.