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Finding the Fourth Proportional to 19,177.70, 28,783.04 and 7,499.12

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Solution

The fourth proportional to 19,177.70, 28,783.04 and 7,499.12 is: 11,255.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,177.70 : 28,783.04 = 7,499.12 : x
  2. Step 2: Convert to fraction form
    19,177.70/28,783.04 = 7,499.12/x
  3. Step 3: Cross multiply
    19,177.70x = 28,783.04 × 7,499.12
  4. Step 4: Simplify right side
    19,177.70x = 215,847,289.51
  5. Step 5: Solve for x
    x = 215,847,289.51/19,177.70
  6. Step 6: Final answer
    x = 11,255.12

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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.