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Finding the Fourth Proportional to 113,190.59, 169,785.52 and 28,950.80

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Solution

The fourth proportional to 113,190.59, 169,785.52 and 28,950.80 is: 43,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,190.59 : 169,785.52 = 28,950.80 : x
  2. Step 2: Convert to fraction form
    113,190.59/169,785.52 = 28,950.80/x
  3. Step 3: Cross multiply
    113,190.59x = 169,785.52 × 28,950.80
  4. Step 4: Simplify right side
    113,190.59x = 4,915,425,711.11
  5. Step 5: Solve for x
    x = 4,915,425,711.11/113,190.59
  6. Step 6: Final answer
    x = 43,426.10

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1.5x scale

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.