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Finding the Fourth Proportional to 9,008.10, 12,431.16 and 5,029.21

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Solution

The fourth proportional to 9,008.10, 12,431.16 and 5,029.21 is: 6,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,008.10 : 12,431.16 = 5,029.21 : x
  2. Step 2: Convert to fraction form
    9,008.10/12,431.16 = 5,029.21/x
  3. Step 3: Cross multiply
    9,008.10x = 12,431.16 × 5,029.21
  4. Step 4: Simplify right side
    9,008.10x = 62,518,914.18
  5. Step 5: Solve for x
    x = 62,518,914.18/9,008.10
  6. Step 6: Final answer
    x = 6,940.30

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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.