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Finding the Fourth Proportional to 108,470.40, 162,786.60 and 55,852.80

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Solution

The fourth proportional to 108,470.40, 162,786.60 and 55,852.80 is: 83,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,470.40 : 162,786.60 = 55,852.80 : x
  2. Step 2: Convert to fraction form
    108,470.40/162,786.60 = 55,852.80/x
  3. Step 3: Cross multiply
    108,470.40x = 162,786.60 × 55,852.80
  4. Step 4: Simplify right side
    108,470.40x = 9,092,087,412.48
  5. Step 5: Solve for x
    x = 9,092,087,412.48/108,470.40
  6. Step 6: Final answer
    x = 83,820.91

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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.