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Finding the Fourth Proportional to 109,963.80, 165,026.70 and 74,341.08

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Solution

The fourth proportional to 109,963.80, 165,026.70 and 74,341.08 is: 111,566.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,963.80 : 165,026.70 = 74,341.08 : x
  2. Step 2: Convert to fraction form
    109,963.80/165,026.70 = 74,341.08/x
  3. Step 3: Cross multiply
    109,963.80x = 165,026.70 × 74,341.08
  4. Step 4: Simplify right side
    109,963.80x = 12,268,263,106.84
  5. Step 5: Solve for x
    x = 12,268,263,106.84/109,963.80
  6. Step 6: Final answer
    x = 111,566.38

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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.