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Finding the Fourth Proportional to 163,851.71, 245,805.60 and 75,112.84

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Solution

The fourth proportional to 163,851.71, 245,805.60 and 75,112.84 is: 112,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,851.71 : 245,805.60 = 75,112.84 : x
  2. Step 2: Convert to fraction form
    163,851.71/245,805.60 = 75,112.84/x
  3. Step 3: Cross multiply
    163,851.71x = 245,805.60 × 75,112.84
  4. Step 4: Simplify right side
    163,851.71x = 18,463,156,703.90
  5. Step 5: Solve for x
    x = 18,463,156,703.90/163,851.71
  6. Step 6: Final answer
    x = 112,682.11

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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.