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Finding the Fourth Proportional to 14,028.60, 21,035.07 and 6,994.29

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Solution

The fourth proportional to 14,028.60, 21,035.07 and 6,994.29 is: 10,487.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028.60 : 21,035.07 = 6,994.29 : x
  2. Step 2: Convert to fraction form
    14,028.60/21,035.07 = 6,994.29/x
  3. Step 3: Cross multiply
    14,028.60x = 21,035.07 × 6,994.29
  4. Step 4: Simplify right side
    14,028.60x = 147,125,379.75
  5. Step 5: Solve for x
    x = 147,125,379.75/14,028.60
  6. Step 6: Final answer
    x = 10,487.53

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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.