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Finding the Fourth Proportional to 5,647.48, 8,472.64 and 2,875.66

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Solution

The fourth proportional to 5,647.48, 8,472.64 and 2,875.66 is: 4,314.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647.48 : 8,472.64 = 2,875.66 : x
  2. Step 2: Convert to fraction form
    5,647.48/8,472.64 = 2,875.66/x
  3. Step 3: Cross multiply
    5,647.48x = 8,472.64 × 2,875.66
  4. Step 4: Simplify right side
    5,647.48x = 24,364,431.94
  5. Step 5: Solve for x
    x = 24,364,431.94/5,647.48
  6. Step 6: Final answer
    x = 4,314.21

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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.