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Finding the Fourth Proportional to 13,967.10, 20,926.05 and 7,378.77

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Solution

The fourth proportional to 13,967.10, 20,926.05 and 7,378.77 is: 11,055.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,967.10 : 20,926.05 = 7,378.77 : x
  2. Step 2: Convert to fraction form
    13,967.10/20,926.05 = 7,378.77/x
  3. Step 3: Cross multiply
    13,967.10x = 20,926.05 × 7,378.77
  4. Step 4: Simplify right side
    13,967.10x = 154,408,509.96
  5. Step 5: Solve for x
    x = 154,408,509.96/13,967.10
  6. Step 6: Final answer
    x = 11,055.16

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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.