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Finding the Fourth Proportional to 13,053.72, 18,014.07 and 7,085.04

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Solution

The fourth proportional to 13,053.72, 18,014.07 and 7,085.04 is: 9,777.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.72 : 18,014.07 = 7,085.04 : x
  2. Step 2: Convert to fraction form
    13,053.72/18,014.07 = 7,085.04/x
  3. Step 3: Cross multiply
    13,053.72x = 18,014.07 × 7,085.04
  4. Step 4: Simplify right side
    13,053.72x = 127,630,406.51
  5. Step 5: Solve for x
    x = 127,630,406.51/13,053.72
  6. Step 6: Final answer
    x = 9,777.32

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Half scale
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Double scale
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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.