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Finding the Fourth Proportional to 118,295.19, 177,263.25 and 86,726.27

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Solution

The fourth proportional to 118,295.19, 177,263.25 and 86,726.27 is: 129,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,295.19 : 177,263.25 = 86,726.27 : x
  2. Step 2: Convert to fraction form
    118,295.19/177,263.25 = 86,726.27/x
  3. Step 3: Cross multiply
    118,295.19x = 177,263.25 × 86,726.27
  4. Step 4: Simplify right side
    118,295.19x = 15,373,380,598.51
  5. Step 5: Solve for x
    x = 15,373,380,598.51/118,295.19
  6. Step 6: Final answer
    x = 129,957.78

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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.