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Finding the Fourth Proportional to 31,208.10, 46,812.15 and 9,022.20

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Solution

The fourth proportional to 31,208.10, 46,812.15 and 9,022.20 is: 13,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,208.10 : 46,812.15 = 9,022.20 : x
  2. Step 2: Convert to fraction form
    31,208.10/46,812.15 = 9,022.20/x
  3. Step 3: Cross multiply
    31,208.10x = 46,812.15 × 9,022.20
  4. Step 4: Simplify right side
    31,208.10x = 422,348,579.73
  5. Step 5: Solve for x
    x = 422,348,579.73/31,208.10
  6. Step 6: Final answer
    x = 13,533.30

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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.