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Finding the Fourth Proportional to 19,296.88, 28,945.32 and 4,704.88

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Solution

The fourth proportional to 19,296.88, 28,945.32 and 4,704.88 is: 7,057.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.88 : 28,945.32 = 4,704.88 : x
  2. Step 2: Convert to fraction form
    19,296.88/28,945.32 = 4,704.88/x
  3. Step 3: Cross multiply
    19,296.88x = 28,945.32 × 4,704.88
  4. Step 4: Simplify right side
    19,296.88x = 136,184,088.91
  5. Step 5: Solve for x
    x = 136,184,088.91/19,296.88
  6. Step 6: Final answer
    x = 7,057.31

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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.