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Finding the Fourth Proportional to 136,906.60, 205,206.30 and 58,007.40

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Solution

The fourth proportional to 136,906.60, 205,206.30 and 58,007.40 is: 86,946.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,906.60 : 205,206.30 = 58,007.40 : x
  2. Step 2: Convert to fraction form
    136,906.60/205,206.30 = 58,007.40/x
  3. Step 3: Cross multiply
    136,906.60x = 205,206.30 × 58,007.40
  4. Step 4: Simplify right side
    136,906.60x = 11,903,483,926.62
  5. Step 5: Solve for x
    x = 11,903,483,926.62/136,906.60
  6. Step 6: Final answer
    x = 86,946.02

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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.