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Finding the Fourth Proportional to 19,157.99, 28,723.68 and 8,055.65

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Solution

The fourth proportional to 19,157.99, 28,723.68 and 8,055.65 is: 12,077.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.99 : 28,723.68 = 8,055.65 : x
  2. Step 2: Convert to fraction form
    19,157.99/28,723.68 = 8,055.65/x
  3. Step 3: Cross multiply
    19,157.99x = 28,723.68 × 8,055.65
  4. Step 4: Simplify right side
    19,157.99x = 231,387,984.60
  5. Step 5: Solve for x
    x = 231,387,984.60/19,157.99
  6. Step 6: Final answer
    x = 12,077.89

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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.