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Finding the Fourth Proportional to 83,605.64, 125,410.88 and 39,253.28

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Solution

The fourth proportional to 83,605.64, 125,410.88 and 39,253.28 is: 58,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,605.64 : 125,410.88 = 39,253.28 : x
  2. Step 2: Convert to fraction form
    83,605.64/125,410.88 = 39,253.28/x
  3. Step 3: Cross multiply
    83,605.64x = 125,410.88 × 39,253.28
  4. Step 4: Simplify right side
    83,605.64x = 4,922,787,858.77
  5. Step 5: Solve for x
    x = 4,922,787,858.77/83,605.64
  6. Step 6: Final answer
    x = 58,881.05

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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.