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Finding the Fourth Proportional to 13,046.66, 18,004.24 and 7,078.32

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Solution

The fourth proportional to 13,046.66, 18,004.24 and 7,078.32 is: 9,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,046.66 : 18,004.24 = 7,078.32 : x
  2. Step 2: Convert to fraction form
    13,046.66/18,004.24 = 7,078.32/x
  3. Step 3: Cross multiply
    13,046.66x = 18,004.24 × 7,078.32
  4. Step 4: Simplify right side
    13,046.66x = 127,439,772.08
  5. Step 5: Solve for x
    x = 127,439,772.08/13,046.66
  6. Step 6: Final answer
    x = 9,768.00

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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.