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Finding the Fourth Proportional to 12,574.53, 17,352.09 and 6,985.53

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Solution

The fourth proportional to 12,574.53, 17,352.09 and 6,985.53 is: 9,639.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,574.53 : 17,352.09 = 6,985.53 : x
  2. Step 2: Convert to fraction form
    12,574.53/17,352.09 = 6,985.53/x
  3. Step 3: Cross multiply
    12,574.53x = 17,352.09 × 6,985.53
  4. Step 4: Simplify right side
    12,574.53x = 121,213,545.26
  5. Step 5: Solve for x
    x = 121,213,545.26/12,574.53
  6. Step 6: Final answer
    x = 9,639.61

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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.