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Finding the Fourth Proportional to 113,813.70, 170,720.55 and 54,764.70

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Solution

The fourth proportional to 113,813.70, 170,720.55 and 54,764.70 is: 82,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,813.70 : 170,720.55 = 54,764.70 : x
  2. Step 2: Convert to fraction form
    113,813.70/170,720.55 = 54,764.70/x
  3. Step 3: Cross multiply
    113,813.70x = 170,720.55 × 54,764.70
  4. Step 4: Simplify right side
    113,813.70x = 9,349,459,704.59
  5. Step 5: Solve for x
    x = 9,349,459,704.59/113,813.70
  6. Step 6: Final answer
    x = 82,147.05

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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.