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Finding the Fourth Proportional to 77,904.60, 116,908.66 and 28,656.60

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Solution

The fourth proportional to 77,904.60, 116,908.66 and 28,656.60 is: 43,003.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,904.60 : 116,908.66 = 28,656.60 : x
  2. Step 2: Convert to fraction form
    77,904.60/116,908.66 = 28,656.60/x
  3. Step 3: Cross multiply
    77,904.60x = 116,908.66 × 28,656.60
  4. Step 4: Simplify right side
    77,904.60x = 3,350,204,706.16
  5. Step 5: Solve for x
    x = 3,350,204,706.16/77,904.60
  6. Step 6: Final answer
    x = 43,003.94

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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.