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Finding the Fourth Proportional to 136,543.30, 204,814.95 and 113,215.30

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Solution

The fourth proportional to 136,543.30, 204,814.95 and 113,215.30 is: 169,822.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,543.30 : 204,814.95 = 113,215.30 : x
  2. Step 2: Convert to fraction form
    136,543.30/204,814.95 = 113,215.30/x
  3. Step 3: Cross multiply
    136,543.30x = 204,814.95 × 113,215.30
  4. Step 4: Simplify right side
    136,543.30x = 23,188,186,008.74
  5. Step 5: Solve for x
    x = 23,188,186,008.74/136,543.30
  6. Step 6: Final answer
    x = 169,822.95

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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.