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Finding the Fourth Proportional to 3,042.99, 4,564.49 and 851.77

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Solution

The fourth proportional to 3,042.99, 4,564.49 and 851.77 is: 1,277.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.99 : 4,564.49 = 851.77 : x
  2. Step 2: Convert to fraction form
    3,042.99/4,564.49 = 851.77/x
  3. Step 3: Cross multiply
    3,042.99x = 4,564.49 × 851.77
  4. Step 4: Simplify right side
    3,042.99x = 3,887,895.65
  5. Step 5: Solve for x
    x = 3,887,895.65/3,042.99
  6. Step 6: Final answer
    x = 1,277.66

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Double scale
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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.