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Finding the Fourth Proportional to 83,394.78, 115,098.21 and 47,586.30

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Solution

The fourth proportional to 83,394.78, 115,098.21 and 47,586.30 is: 65,676.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,394.78 : 115,098.21 = 47,586.30 : x
  2. Step 2: Convert to fraction form
    83,394.78/115,098.21 = 47,586.30/x
  3. Step 3: Cross multiply
    83,394.78x = 115,098.21 × 47,586.30
  4. Step 4: Simplify right side
    83,394.78x = 5,477,097,950.52
  5. Step 5: Solve for x
    x = 5,477,097,950.52/83,394.78
  6. Step 6: Final answer
    x = 65,676.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.