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Finding the Fourth Proportional to 136,995.12, 205,492.14 and 43,508.16

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Solution

The fourth proportional to 136,995.12, 205,492.14 and 43,508.16 is: 65,262.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,995.12 : 205,492.14 = 43,508.16 : x
  2. Step 2: Convert to fraction form
    136,995.12/205,492.14 = 43,508.16/x
  3. Step 3: Cross multiply
    136,995.12x = 205,492.14 × 43,508.16
  4. Step 4: Simplify right side
    136,995.12x = 8,940,584,905.86
  5. Step 5: Solve for x
    x = 8,940,584,905.86/136,995.12
  6. Step 6: Final answer
    x = 65,262.07

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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.