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Finding the Fourth Proportional to 19,031.06, 28,551.72 and 7,934.06

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Solution

The fourth proportional to 19,031.06, 28,551.72 and 7,934.06 is: 11,903.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,031.06 : 28,551.72 = 7,934.06 : x
  2. Step 2: Convert to fraction form
    19,031.06/28,551.72 = 7,934.06/x
  3. Step 3: Cross multiply
    19,031.06x = 28,551.72 × 7,934.06
  4. Step 4: Simplify right side
    19,031.06x = 226,531,059.58
  5. Step 5: Solve for x
    x = 226,531,059.58/19,031.06
  6. Step 6: Final answer
    x = 11,903.23

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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.