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Finding the Fourth Proportional to 186,503.74, 257,375.19 and 101,620.81

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Solution

The fourth proportional to 186,503.74, 257,375.19 and 101,620.81 is: 140,236.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,503.74 : 257,375.19 = 101,620.81 : x
  2. Step 2: Convert to fraction form
    186,503.74/257,375.19 = 101,620.81/x
  3. Step 3: Cross multiply
    186,503.74x = 257,375.19 × 101,620.81
  4. Step 4: Simplify right side
    186,503.74x = 26,154,675,281.70
  5. Step 5: Solve for x
    x = 26,154,675,281.70/186,503.74
  6. Step 6: Final answer
    x = 140,236.73

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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.