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Finding the Fourth Proportional to 455,340.15, 682,885.54 and 171,008.71

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Solution

The fourth proportional to 455,340.15, 682,885.54 and 171,008.71 is: 256,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,340.15 : 682,885.54 = 171,008.71 : x
  2. Step 2: Convert to fraction form
    455,340.15/682,885.54 = 171,008.71/x
  3. Step 3: Cross multiply
    455,340.15x = 682,885.54 × 171,008.71
  4. Step 4: Simplify right side
    455,340.15x = 116,779,372,398.45
  5. Step 5: Solve for x
    x = 116,779,372,398.45/455,340.15
  6. Step 6: Final answer
    x = 256,466.23

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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.