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Finding the Fourth Proportional to 12,993.93, 17,931.63 and 7,025.60

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Solution

The fourth proportional to 12,993.93, 17,931.63 and 7,025.60 is: 9,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,993.93 : 17,931.63 = 7,025.60 : x
  2. Step 2: Convert to fraction form
    12,993.93/17,931.63 = 7,025.60/x
  3. Step 3: Cross multiply
    12,993.93x = 17,931.63 × 7,025.60
  4. Step 4: Simplify right side
    12,993.93x = 125,980,530.90
  5. Step 5: Solve for x
    x = 125,980,530.90/12,993.93
  6. Step 6: Final answer
    x = 9,695.34

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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.