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Finding the Fourth Proportional to 136,390.85, 188,216.72 and 93,369.27

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Solution

The fourth proportional to 136,390.85, 188,216.72 and 93,369.27 is: 128,847.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,390.85 : 188,216.72 = 93,369.27 : x
  2. Step 2: Convert to fraction form
    136,390.85/188,216.72 = 93,369.27/x
  3. Step 3: Cross multiply
    136,390.85x = 188,216.72 × 93,369.27
  4. Step 4: Simplify right side
    136,390.85x = 17,573,657,281.35
  5. Step 5: Solve for x
    x = 17,573,657,281.35/136,390.85
  6. Step 6: Final answer
    x = 128,847.78

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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.