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Finding the Fourth Proportional to 8,059.40, 11,125.88 and 5,405.84

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Solution

The fourth proportional to 8,059.40, 11,125.88 and 5,405.84 is: 7,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,059.40 : 11,125.88 = 5,405.84 : x
  2. Step 2: Convert to fraction form
    8,059.40/11,125.88 = 5,405.84/x
  3. Step 3: Cross multiply
    8,059.40x = 11,125.88 × 5,405.84
  4. Step 4: Simplify right side
    8,059.40x = 60,144,727.14
  5. Step 5: Solve for x
    x = 60,144,727.14/8,059.40
  6. Step 6: Final answer
    x = 7,462.68

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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.