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Finding the Fourth Proportional to 7,025.76, 9,695.12 and 3,881.76

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Solution

The fourth proportional to 7,025.76, 9,695.12 and 3,881.76 is: 5,356.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,025.76 : 9,695.12 = 3,881.76 : x
  2. Step 2: Convert to fraction form
    7,025.76/9,695.12 = 3,881.76/x
  3. Step 3: Cross multiply
    7,025.76x = 9,695.12 × 3,881.76
  4. Step 4: Simplify right side
    7,025.76x = 37,634,129.01
  5. Step 5: Solve for x
    x = 37,634,129.01/7,025.76
  6. Step 6: Final answer
    x = 5,356.59

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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.