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Finding the Fourth Proportional to 57,808.49, 86,711.51 and 26,643.74

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Solution

The fourth proportional to 57,808.49, 86,711.51 and 26,643.74 is: 39,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,808.49 : 86,711.51 = 26,643.74 : x
  2. Step 2: Convert to fraction form
    57,808.49/86,711.51 = 26,643.74/x
  3. Step 3: Cross multiply
    57,808.49x = 86,711.51 × 26,643.74
  4. Step 4: Simplify right side
    57,808.49x = 2,310,318,927.45
  5. Step 5: Solve for x
    x = 2,310,318,927.45/57,808.49
  6. Step 6: Final answer
    x = 39,965.05

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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.