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Finding the Fourth Proportional to 83,648.66, 125,406.06 and 43,647.58

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Solution

The fourth proportional to 83,648.66, 125,406.06 and 43,647.58 is: 65,436.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,648.66 : 125,406.06 = 43,647.58 : x
  2. Step 2: Convert to fraction form
    83,648.66/125,406.06 = 43,647.58/x
  3. Step 3: Cross multiply
    83,648.66x = 125,406.06 × 43,647.58
  4. Step 4: Simplify right side
    83,648.66x = 5,473,671,036.33
  5. Step 5: Solve for x
    x = 5,473,671,036.33/83,648.66
  6. Step 6: Final answer
    x = 65,436.45

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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.