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Finding the Fourth Proportional to 53,078.99, 79,616.42 and 19,799.00

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Solution

The fourth proportional to 53,078.99, 79,616.42 and 19,799.00 is: 29,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,078.99 : 79,616.42 = 19,799.00 : x
  2. Step 2: Convert to fraction form
    53,078.99/79,616.42 = 19,799.00/x
  3. Step 3: Cross multiply
    53,078.99x = 79,616.42 × 19,799.00
  4. Step 4: Simplify right side
    53,078.99x = 1,576,325,002.50
  5. Step 5: Solve for x
    x = 1,576,325,002.50/53,078.99
  6. Step 6: Final answer
    x = 29,697.72

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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.