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Finding the Fourth Proportional to 9,145.76, 12,621.22 and 4,954.10

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Solution

The fourth proportional to 9,145.76, 12,621.22 and 4,954.10 is: 6,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.76 : 12,621.22 = 4,954.10 : x
  2. Step 2: Convert to fraction form
    9,145.76/12,621.22 = 4,954.10/x
  3. Step 3: Cross multiply
    9,145.76x = 12,621.22 × 4,954.10
  4. Step 4: Simplify right side
    9,145.76x = 62,526,786.00
  5. Step 5: Solve for x
    x = 62,526,786.00/9,145.76
  6. Step 6: Final answer
    x = 6,836.70

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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.