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Finding the Fourth Proportional to 12,265.94, 18,398.42 and 3,031.94

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Solution

The fourth proportional to 12,265.94, 18,398.42 and 3,031.94 is: 4,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,265.94 : 18,398.42 = 3,031.94 : x
  2. Step 2: Convert to fraction form
    12,265.94/18,398.42 = 3,031.94/x
  3. Step 3: Cross multiply
    12,265.94x = 18,398.42 × 3,031.94
  4. Step 4: Simplify right side
    12,265.94x = 55,782,905.53
  5. Step 5: Solve for x
    x = 55,782,905.53/12,265.94
  6. Step 6: Final answer
    x = 4,547.79

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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.