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Finding the Fourth Proportional to 13,053.93, 18,013.97 and 7,085.48

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Solution

The fourth proportional to 13,053.93, 18,013.97 and 7,085.48 is: 9,777.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.93 : 18,013.97 = 7,085.48 : x
  2. Step 2: Convert to fraction form
    13,053.93/18,013.97 = 7,085.48/x
  3. Step 3: Cross multiply
    13,053.93x = 18,013.97 × 7,085.48
  4. Step 4: Simplify right side
    13,053.93x = 127,637,498.66
  5. Step 5: Solve for x
    x = 127,637,498.66/13,053.93
  6. Step 6: Final answer
    x = 9,777.71

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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.