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Finding the Fourth Proportional to 74,203.38, 102,373.80 and 45,121.74

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Solution

The fourth proportional to 74,203.38, 102,373.80 and 45,121.74 is: 62,251.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,203.38 : 102,373.80 = 45,121.74 : x
  2. Step 2: Convert to fraction form
    74,203.38/102,373.80 = 45,121.74/x
  3. Step 3: Cross multiply
    74,203.38x = 102,373.80 × 45,121.74
  4. Step 4: Simplify right side
    74,203.38x = 4,619,283,986.41
  5. Step 5: Solve for x
    x = 4,619,283,986.41/74,203.38
  6. Step 6: Final answer
    x = 62,251.67

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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.