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Finding the Fourth Proportional to 12,996.81, 19,483.50 and 4,674.87

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Solution

The fourth proportional to 12,996.81, 19,483.50 and 4,674.87 is: 7,008.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996.81 : 19,483.50 = 4,674.87 : x
  2. Step 2: Convert to fraction form
    12,996.81/19,483.50 = 4,674.87/x
  3. Step 3: Cross multiply
    12,996.81x = 19,483.50 × 4,674.87
  4. Step 4: Simplify right side
    12,996.81x = 91,082,829.65
  5. Step 5: Solve for x
    x = 91,082,829.65/12,996.81
  6. Step 6: Final answer
    x = 7,008.09

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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.