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Finding the Fourth Proportional to 113,212.80, 169,813.80 and 38,325.60

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Solution

The fourth proportional to 113,212.80, 169,813.80 and 38,325.60 is: 57,486.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,212.80 : 169,813.80 = 38,325.60 : x
  2. Step 2: Convert to fraction form
    113,212.80/169,813.80 = 38,325.60/x
  3. Step 3: Cross multiply
    113,212.80x = 169,813.80 × 38,325.60
  4. Step 4: Simplify right side
    113,212.80x = 6,508,215,773.28
  5. Step 5: Solve for x
    x = 6,508,215,773.28/113,212.80
  6. Step 6: Final answer
    x = 57,486.57

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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.