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Finding the Fourth Proportional to 85,990.04, 118,659.74 and 48,257

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Solution

The fourth proportional to 85,990.04, 118,659.74 and 48,257 is: 66,591.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,990.04 : 118,659.74 = 48,257 : x
  2. Step 2: Convert to fraction form
    85,990.04/118,659.74 = 48,257/x
  3. Step 3: Cross multiply
    85,990.04x = 118,659.74 × 48,257
  4. Step 4: Simplify right side
    85,990.04x = 5,726,163,073.18
  5. Step 5: Solve for x
    x = 5,726,163,073.18/85,990.04
  6. Step 6: Final answer
    x = 66,591.00

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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.