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Finding the Fourth Proportional to 8,775.40, 12,109.54 and 4,796.54

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Solution

The fourth proportional to 8,775.40, 12,109.54 and 4,796.54 is: 6,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.40 : 12,109.54 = 4,796.54 : x
  2. Step 2: Convert to fraction form
    8,775.40/12,109.54 = 4,796.54/x
  3. Step 3: Cross multiply
    8,775.40x = 12,109.54 × 4,796.54
  4. Step 4: Simplify right side
    8,775.40x = 58,083,892.99
  5. Step 5: Solve for x
    x = 58,083,892.99/8,775.40
  6. Step 6: Final answer
    x = 6,618.95

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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.