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Finding the Fourth Proportional to 12,656.13, 18,984.06 and 4,866.63

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Solution

The fourth proportional to 12,656.13, 18,984.06 and 4,866.63 is: 7,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.13 : 18,984.06 = 4,866.63 : x
  2. Step 2: Convert to fraction form
    12,656.13/18,984.06 = 4,866.63/x
  3. Step 3: Cross multiply
    12,656.13x = 18,984.06 × 4,866.63
  4. Step 4: Simplify right side
    12,656.13x = 92,388,395.92
  5. Step 5: Solve for x
    x = 92,388,395.92/12,656.13
  6. Step 6: Final answer
    x = 7,299.89

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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.