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Finding the Fourth Proportional to 26,797.85, 36,978.59 and 14,861.15

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Solution

The fourth proportional to 26,797.85, 36,978.59 and 14,861.15 is: 20,507.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,797.85 : 36,978.59 = 14,861.15 : x
  2. Step 2: Convert to fraction form
    26,797.85/36,978.59 = 14,861.15/x
  3. Step 3: Cross multiply
    26,797.85x = 36,978.59 × 14,861.15
  4. Step 4: Simplify right side
    26,797.85x = 549,544,113.58
  5. Step 5: Solve for x
    x = 549,544,113.58/26,797.85
  6. Step 6: Final answer
    x = 20,507.03

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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.