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Finding the Fourth Proportional to 12,472.01, 18,697.47 and 5,805.06

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Solution

The fourth proportional to 12,472.01, 18,697.47 and 5,805.06 is: 8,702.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.01 : 18,697.47 = 5,805.06 : x
  2. Step 2: Convert to fraction form
    12,472.01/18,697.47 = 5,805.06/x
  3. Step 3: Cross multiply
    12,472.01x = 18,697.47 × 5,805.06
  4. Step 4: Simplify right side
    12,472.01x = 108,539,935.20
  5. Step 5: Solve for x
    x = 108,539,935.20/12,472.01
  6. Step 6: Final answer
    x = 8,702.69

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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.