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Finding the Fourth Proportional to 165,730.66, 248,704.95 and 90,903.25

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Solution

The fourth proportional to 165,730.66, 248,704.95 and 90,903.25 is: 136,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,730.66 : 248,704.95 = 90,903.25 : x
  2. Step 2: Convert to fraction form
    165,730.66/248,704.95 = 90,903.25/x
  3. Step 3: Cross multiply
    165,730.66x = 248,704.95 × 90,903.25
  4. Step 4: Simplify right side
    165,730.66x = 22,608,088,246.09
  5. Step 5: Solve for x
    x = 22,608,088,246.09/165,730.66
  6. Step 6: Final answer
    x = 136,414.64

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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.