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Finding the Fourth Proportional to 103,272.40, 154,911.84 and 36,711.46

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Solution

The fourth proportional to 103,272.40, 154,911.84 and 36,711.46 is: 55,068.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,272.40 : 154,911.84 = 36,711.46 : x
  2. Step 2: Convert to fraction form
    103,272.40/154,911.84 = 36,711.46/x
  3. Step 3: Cross multiply
    103,272.40x = 154,911.84 × 36,711.46
  4. Step 4: Simplify right side
    103,272.40x = 5,687,039,817.69
  5. Step 5: Solve for x
    x = 5,687,039,817.69/103,272.40
  6. Step 6: Final answer
    x = 55,068.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.