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Finding the Fourth Proportional to 19,000.79, 28,501.67 and 9,003.19

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Solution

The fourth proportional to 19,000.79, 28,501.67 and 9,003.19 is: 13,505.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.79 : 28,501.67 = 9,003.19 : x
  2. Step 2: Convert to fraction form
    19,000.79/28,501.67 = 9,003.19/x
  3. Step 3: Cross multiply
    19,000.79x = 28,501.67 × 9,003.19
  4. Step 4: Simplify right side
    19,000.79x = 256,605,950.33
  5. Step 5: Solve for x
    x = 256,605,950.33/19,000.79
  6. Step 6: Final answer
    x = 13,505.01

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Half scale
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Similar ratio
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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.