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Finding the Fourth Proportional to 171,886.20, 258,023.70 and 92,959.80

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Solution

The fourth proportional to 171,886.20, 258,023.70 and 92,959.80 is: 139,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,886.20 : 258,023.70 = 92,959.80 : x
  2. Step 2: Convert to fraction form
    171,886.20/258,023.70 = 92,959.80/x
  3. Step 3: Cross multiply
    171,886.20x = 258,023.70 × 92,959.80
  4. Step 4: Simplify right side
    171,886.20x = 23,985,831,547.26
  5. Step 5: Solve for x
    x = 23,985,831,547.26/171,886.20
  6. Step 6: Final answer
    x = 139,544.84

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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.