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Finding the Fourth Proportional to 19,359.63, 29,031.63 and 7,507.16

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Solution

The fourth proportional to 19,359.63, 29,031.63 and 7,507.16 is: 11,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.63 : 29,031.63 = 7,507.16 : x
  2. Step 2: Convert to fraction form
    19,359.63/29,031.63 = 7,507.16/x
  3. Step 3: Cross multiply
    19,359.63x = 29,031.63 × 7,507.16
  4. Step 4: Simplify right side
    19,359.63x = 217,945,139.65
  5. Step 5: Solve for x
    x = 217,945,139.65/19,359.63
  6. Step 6: Final answer
    x = 11,257.71

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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.