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Finding the Fourth Proportional to 174,893.80, 262,038.30 and 81,207.40

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Solution

The fourth proportional to 174,893.80, 262,038.30 and 81,207.40 is: 121,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,893.80 : 262,038.30 = 81,207.40 : x
  2. Step 2: Convert to fraction form
    174,893.80/262,038.30 = 81,207.40/x
  3. Step 3: Cross multiply
    174,893.80x = 262,038.30 × 81,207.40
  4. Step 4: Simplify right side
    174,893.80x = 21,279,449,043.42
  5. Step 5: Solve for x
    x = 21,279,449,043.42/174,893.80
  6. Step 6: Final answer
    x = 121,670.69

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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.