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Finding the Fourth Proportional to 30,461.06, 45,691.59 and 8,274.44

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Solution

The fourth proportional to 30,461.06, 45,691.59 and 8,274.44 is: 12,411.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,461.06 : 45,691.59 = 8,274.44 : x
  2. Step 2: Convert to fraction form
    30,461.06/45,691.59 = 8,274.44/x
  3. Step 3: Cross multiply
    30,461.06x = 45,691.59 × 8,274.44
  4. Step 4: Simplify right side
    30,461.06x = 378,072,319.96
  5. Step 5: Solve for x
    x = 378,072,319.96/30,461.06
  6. Step 6: Final answer
    x = 12,411.66

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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.