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Finding the Fourth Proportional to 12,734.70, 17,574.99 and 7,070.54

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Solution

The fourth proportional to 12,734.70, 17,574.99 and 7,070.54 is: 9,757.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,734.70 : 17,574.99 = 7,070.54 : x
  2. Step 2: Convert to fraction form
    12,734.70/17,574.99 = 7,070.54/x
  3. Step 3: Cross multiply
    12,734.70x = 17,574.99 × 7,070.54
  4. Step 4: Simplify right side
    12,734.70x = 124,264,708.95
  5. Step 5: Solve for x
    x = 124,264,708.95/12,734.70
  6. Step 6: Final answer
    x = 9,757.96

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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.