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Finding the Fourth Proportional to 8,465.72, 12,700.74 and 5,367.74

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Solution

The fourth proportional to 8,465.72, 12,700.74 and 5,367.74 is: 8,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,465.72 : 12,700.74 = 5,367.74 : x
  2. Step 2: Convert to fraction form
    8,465.72/12,700.74 = 5,367.74/x
  3. Step 3: Cross multiply
    8,465.72x = 12,700.74 × 5,367.74
  4. Step 4: Simplify right side
    8,465.72x = 68,174,270.13
  5. Step 5: Solve for x
    x = 68,174,270.13/8,465.72
  6. Step 6: Final answer
    x = 8,052.98

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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.