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Finding the Fourth Proportional to 136,860.84, 188,913.06 and 86,627.88

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Solution

The fourth proportional to 136,860.84, 188,913.06 and 86,627.88 is: 119,575.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,860.84 : 188,913.06 = 86,627.88 : x
  2. Step 2: Convert to fraction form
    136,860.84/188,913.06 = 86,627.88/x
  3. Step 3: Cross multiply
    136,860.84x = 188,913.06 × 86,627.88
  4. Step 4: Simplify right side
    136,860.84x = 16,365,137,892.11
  5. Step 5: Solve for x
    x = 16,365,137,892.11/136,860.84
  6. Step 6: Final answer
    x = 119,575.02

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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.