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Finding the Fourth Proportional to 174,671.91, 261,820.97 and 90,347.16

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Solution

The fourth proportional to 174,671.91, 261,820.97 and 90,347.16 is: 135,424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,671.91 : 261,820.97 = 90,347.16 : x
  2. Step 2: Convert to fraction form
    174,671.91/261,820.97 = 90,347.16/x
  3. Step 3: Cross multiply
    174,671.91x = 261,820.97 × 90,347.16
  4. Step 4: Simplify right side
    174,671.91x = 23,654,780,616.21
  5. Step 5: Solve for x
    x = 23,654,780,616.21/174,671.91
  6. Step 6: Final answer
    x = 135,424.07

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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.