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Finding the Fourth Proportional to 13,053.99, 18,014.59 and 7,085.66

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Solution

The fourth proportional to 13,053.99, 18,014.59 and 7,085.66 is: 9,778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.99 : 18,014.59 = 7,085.66 : x
  2. Step 2: Convert to fraction form
    13,053.99/18,014.59 = 7,085.66/x
  3. Step 3: Cross multiply
    13,053.99x = 18,014.59 × 7,085.66
  4. Step 4: Simplify right side
    13,053.99x = 127,645,196.28
  5. Step 5: Solve for x
    x = 127,645,196.28/13,053.99
  6. Step 6: Final answer
    x = 9,778.25

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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.