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Finding the Fourth Proportional to 353,505.09, 530,340.70 and 116,847.78

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Solution

The fourth proportional to 353,505.09, 530,340.70 and 116,847.78 is: 175,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,505.09 : 530,340.70 = 116,847.78 : x
  2. Step 2: Convert to fraction form
    353,505.09/530,340.70 = 116,847.78/x
  3. Step 3: Cross multiply
    353,505.09x = 530,340.70 × 116,847.78
  4. Step 4: Simplify right side
    353,505.09x = 61,969,132,854.41
  5. Step 5: Solve for x
    x = 61,969,132,854.41/353,505.09
  6. Step 6: Final answer
    x = 175,299.12

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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.