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Finding the Fourth Proportional to 70,555.09, 105,780.79 and 35,459.41

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Solution

The fourth proportional to 70,555.09, 105,780.79 and 35,459.41 is: 53,163.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,555.09 : 105,780.79 = 35,459.41 : x
  2. Step 2: Convert to fraction form
    70,555.09/105,780.79 = 35,459.41/x
  3. Step 3: Cross multiply
    70,555.09x = 105,780.79 × 35,459.41
  4. Step 4: Simplify right side
    70,555.09x = 3,750,923,696.53
  5. Step 5: Solve for x
    x = 3,750,923,696.53/70,555.09
  6. Step 6: Final answer
    x = 53,163.05

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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.