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Finding the Fourth Proportional to 136,497.34, 188,366.52 and 76,066.66

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Solution

The fourth proportional to 136,497.34, 188,366.52 and 76,066.66 is: 104,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,497.34 : 188,366.52 = 76,066.66 : x
  2. Step 2: Convert to fraction form
    136,497.34/188,366.52 = 76,066.66/x
  3. Step 3: Cross multiply
    136,497.34x = 188,366.52 × 76,066.66
  4. Step 4: Simplify right side
    136,497.34x = 14,328,412,032.22
  5. Step 5: Solve for x
    x = 14,328,412,032.22/136,497.34
  6. Step 6: Final answer
    x = 104,972.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.