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Finding the Fourth Proportional to 7,059.84, 9,742.14 and 3,915.96

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Solution

The fourth proportional to 7,059.84, 9,742.14 and 3,915.96 is: 5,403.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,059.84 : 9,742.14 = 3,915.96 : x
  2. Step 2: Convert to fraction form
    7,059.84/9,742.14 = 3,915.96/x
  3. Step 3: Cross multiply
    7,059.84x = 9,742.14 × 3,915.96
  4. Step 4: Simplify right side
    7,059.84x = 38,149,830.55
  5. Step 5: Solve for x
    x = 38,149,830.55/7,059.84
  6. Step 6: Final answer
    x = 5,403.78

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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.