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Finding the Fourth Proportional to 12,594.75, 17,381.06 and 6,929.81

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Solution

The fourth proportional to 12,594.75, 17,381.06 and 6,929.81 is: 9,563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,594.75 : 17,381.06 = 6,929.81 : x
  2. Step 2: Convert to fraction form
    12,594.75/17,381.06 = 6,929.81/x
  3. Step 3: Cross multiply
    12,594.75x = 17,381.06 × 6,929.81
  4. Step 4: Simplify right side
    12,594.75x = 120,447,321.84
  5. Step 5: Solve for x
    x = 120,447,321.84/12,594.75
  6. Step 6: Final answer
    x = 9,563.30

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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.