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Finding the Fourth Proportional to 85,411.88, 117,859.46 and 49,594.90

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Solution

The fourth proportional to 85,411.88, 117,859.46 and 49,594.90 is: 68,435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,411.88 : 117,859.46 = 49,594.90 : x
  2. Step 2: Convert to fraction form
    85,411.88/117,859.46 = 49,594.90/x
  3. Step 3: Cross multiply
    85,411.88x = 117,859.46 × 49,594.90
  4. Step 4: Simplify right side
    85,411.88x = 5,845,228,132.75
  5. Step 5: Solve for x
    x = 5,845,228,132.75/85,411.88
  6. Step 6: Final answer
    x = 68,435.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.