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Finding the Fourth Proportional to 185,363.45, 277,852.55 and 78,815.78

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Solution

The fourth proportional to 185,363.45, 277,852.55 and 78,815.78 is: 118,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,363.45 : 277,852.55 = 78,815.78 : x
  2. Step 2: Convert to fraction form
    185,363.45/277,852.55 = 78,815.78/x
  3. Step 3: Cross multiply
    185,363.45x = 277,852.55 × 78,815.78
  4. Step 4: Simplify right side
    185,363.45x = 21,899,166,274.77
  5. Step 5: Solve for x
    x = 21,899,166,274.77/185,363.45
  6. Step 6: Final answer
    x = 118,141.77

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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.