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Finding the Fourth Proportional to 7,850.95, 11,776.43 and 4,931.30

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Solution

The fourth proportional to 7,850.95, 11,776.43 and 4,931.30 is: 7,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,850.95 : 11,776.43 = 4,931.30 : x
  2. Step 2: Convert to fraction form
    7,850.95/11,776.43 = 4,931.30/x
  3. Step 3: Cross multiply
    7,850.95x = 11,776.43 × 4,931.30
  4. Step 4: Simplify right side
    7,850.95x = 58,073,109.26
  5. Step 5: Solve for x
    x = 58,073,109.26/7,850.95
  6. Step 6: Final answer
    x = 7,396.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.