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Finding the Fourth Proportional to 4,699.99, 6,488.51 and 3,000.21

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Solution

The fourth proportional to 4,699.99, 6,488.51 and 3,000.21 is: 4,141.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.99 : 6,488.51 = 3,000.21 : x
  2. Step 2: Convert to fraction form
    4,699.99/6,488.51 = 3,000.21/x
  3. Step 3: Cross multiply
    4,699.99x = 6,488.51 × 3,000.21
  4. Step 4: Simplify right side
    4,699.99x = 19,466,853.25
  5. Step 5: Solve for x
    x = 19,466,853.25/4,699.99
  6. Step 6: Final answer
    x = 4,141.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.