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Finding the Fourth Proportional to 9,871.68, 13,625.64 and 5,895.48

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Solution

The fourth proportional to 9,871.68, 13,625.64 and 5,895.48 is: 8,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.68 : 13,625.64 = 5,895.48 : x
  2. Step 2: Convert to fraction form
    9,871.68/13,625.64 = 5,895.48/x
  3. Step 3: Cross multiply
    9,871.68x = 13,625.64 × 5,895.48
  4. Step 4: Simplify right side
    9,871.68x = 80,329,688.11
  5. Step 5: Solve for x
    x = 80,329,688.11/9,871.68
  6. Step 6: Final answer
    x = 8,137.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.