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Finding the Fourth Proportional to 7,347.76, 10,137.10 and 5,438.12

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Solution

The fourth proportional to 7,347.76, 10,137.10 and 5,438.12 is: 7,502.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,347.76 : 10,137.10 = 5,438.12 : x
  2. Step 2: Convert to fraction form
    7,347.76/10,137.10 = 5,438.12/x
  3. Step 3: Cross multiply
    7,347.76x = 10,137.10 × 5,438.12
  4. Step 4: Simplify right side
    7,347.76x = 55,126,766.25
  5. Step 5: Solve for x
    x = 55,126,766.25/7,347.76
  6. Step 6: Final answer
    x = 7,502.53

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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.