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Finding the Fourth Proportional to 108,726.40, 163,089.60 and 104,924.80

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Solution

The fourth proportional to 108,726.40, 163,089.60 and 104,924.80 is: 157,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,726.40 : 163,089.60 = 104,924.80 : x
  2. Step 2: Convert to fraction form
    108,726.40/163,089.60 = 104,924.80/x
  3. Step 3: Cross multiply
    108,726.40x = 163,089.60 × 104,924.80
  4. Step 4: Simplify right side
    108,726.40x = 17,112,143,662.08
  5. Step 5: Solve for x
    x = 17,112,143,662.08/108,726.40
  6. Step 6: Final answer
    x = 157,387.20

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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.