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Finding the Fourth Proportional to 136,645.80, 204,968.70 and 113,317.80

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Solution

The fourth proportional to 136,645.80, 204,968.70 and 113,317.80 is: 169,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,645.80 : 204,968.70 = 113,317.80 : x
  2. Step 2: Convert to fraction form
    136,645.80/204,968.70 = 113,317.80/x
  3. Step 3: Cross multiply
    136,645.80x = 204,968.70 × 113,317.80
  4. Step 4: Simplify right side
    136,645.80x = 23,226,602,152.86
  5. Step 5: Solve for x
    x = 23,226,602,152.86/136,645.80
  6. Step 6: Final answer
    x = 169,976.70

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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.