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Finding the Fourth Proportional to 260,885.52, 391,394.16 and 73,898.64

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Solution

The fourth proportional to 260,885.52, 391,394.16 and 73,898.64 is: 110,866.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,885.52 : 391,394.16 = 73,898.64 : x
  2. Step 2: Convert to fraction form
    260,885.52/391,394.16 = 73,898.64/x
  3. Step 3: Cross multiply
    260,885.52x = 391,394.16 × 73,898.64
  4. Step 4: Simplify right side
    260,885.52x = 28,923,496,127.94
  5. Step 5: Solve for x
    x = 28,923,496,127.94/260,885.52
  6. Step 6: Final answer
    x = 110,866.62

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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.