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Finding the Fourth Proportional to 57,809.40, 86,688.18 and 26,653.56

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Solution

The fourth proportional to 57,809.40, 86,688.18 and 26,653.56 is: 39,968.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,809.40 : 86,688.18 = 26,653.56 : x
  2. Step 2: Convert to fraction form
    57,809.40/86,688.18 = 26,653.56/x
  3. Step 3: Cross multiply
    57,809.40x = 86,688.18 × 26,653.56
  4. Step 4: Simplify right side
    57,809.40x = 2,310,548,606.92
  5. Step 5: Solve for x
    x = 2,310,548,606.92/57,809.40
  6. Step 6: Final answer
    x = 39,968.39

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1.5x scale

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.