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Finding the Fourth Proportional to 76,394.88, 114,487.56 and 57,659.04

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Solution

The fourth proportional to 76,394.88, 114,487.56 and 57,659.04 is: 86,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,394.88 : 114,487.56 = 57,659.04 : x
  2. Step 2: Convert to fraction form
    76,394.88/114,487.56 = 57,659.04/x
  3. Step 3: Cross multiply
    76,394.88x = 114,487.56 × 57,659.04
  4. Step 4: Simplify right side
    76,394.88x = 6,601,242,801.54
  5. Step 5: Solve for x
    x = 6,601,242,801.54/76,394.88
  6. Step 6: Final answer
    x = 86,409.49

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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.