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Finding the Fourth Proportional to 8,906.68, 12,291.54 and 4,928.17

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Solution

The fourth proportional to 8,906.68, 12,291.54 and 4,928.17 is: 6,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.68 : 12,291.54 = 4,928.17 : x
  2. Step 2: Convert to fraction form
    8,906.68/12,291.54 = 4,928.17/x
  3. Step 3: Cross multiply
    8,906.68x = 12,291.54 × 4,928.17
  4. Step 4: Simplify right side
    8,906.68x = 60,574,798.68
  5. Step 5: Solve for x
    x = 60,574,798.68/8,906.68
  6. Step 6: Final answer
    x = 6,801.05

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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.