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Finding the Fourth Proportional to 85,948.66, 118,607.29 and 47,705.97

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Solution

The fourth proportional to 85,948.66, 118,607.29 and 47,705.97 is: 65,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,948.66 : 118,607.29 = 47,705.97 : x
  2. Step 2: Convert to fraction form
    85,948.66/118,607.29 = 47,705.97/x
  3. Step 3: Cross multiply
    85,948.66x = 118,607.29 × 47,705.97
  4. Step 4: Simplify right side
    85,948.66x = 5,658,275,818.52
  5. Step 5: Solve for x
    x = 5,658,275,818.52/85,948.66
  6. Step 6: Final answer
    x = 65,833.21

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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.