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Finding the Fourth Proportional to 26,699.99, 40,049.09 and 12,666.74

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Solution

The fourth proportional to 26,699.99, 40,049.09 and 12,666.74 is: 18,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,699.99 : 40,049.09 = 12,666.74 : x
  2. Step 2: Convert to fraction form
    26,699.99/40,049.09 = 12,666.74/x
  3. Step 3: Cross multiply
    26,699.99x = 40,049.09 × 12,666.74
  4. Step 4: Simplify right side
    26,699.99x = 507,291,346.93
  5. Step 5: Solve for x
    x = 507,291,346.93/26,699.99
  6. Step 6: Final answer
    x = 18,999.68

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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.