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Finding the Fourth Proportional to 14,474.70, 21,712.20 and 5,108.10

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Solution

The fourth proportional to 14,474.70, 21,712.20 and 5,108.10 is: 7,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,474.70 : 21,712.20 = 5,108.10 : x
  2. Step 2: Convert to fraction form
    14,474.70/21,712.20 = 5,108.10/x
  3. Step 3: Cross multiply
    14,474.70x = 21,712.20 × 5,108.10
  4. Step 4: Simplify right side
    14,474.70x = 110,908,088.82
  5. Step 5: Solve for x
    x = 110,908,088.82/14,474.70
  6. Step 6: Final answer
    x = 7,662.20

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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.