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Finding the Fourth Proportional to 70,351.88, 105,527.61 and 54,364.68

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Solution

The fourth proportional to 70,351.88, 105,527.61 and 54,364.68 is: 81,546.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,351.88 : 105,527.61 = 54,364.68 : x
  2. Step 2: Convert to fraction form
    70,351.88/105,527.61 = 54,364.68/x
  3. Step 3: Cross multiply
    70,351.88x = 105,527.61 × 54,364.68
  4. Step 4: Simplify right side
    70,351.88x = 5,736,974,748.81
  5. Step 5: Solve for x
    x = 5,736,974,748.81/70,351.88
  6. Step 6: Final answer
    x = 81,546.86

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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.