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Finding the Fourth Proportional to 12,525.44, 17,285.08 and 7,220.22

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Solution

The fourth proportional to 12,525.44, 17,285.08 and 7,220.22 is: 9,963.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,525.44 : 17,285.08 = 7,220.22 : x
  2. Step 2: Convert to fraction form
    12,525.44/17,285.08 = 7,220.22/x
  3. Step 3: Cross multiply
    12,525.44x = 17,285.08 × 7,220.22
  4. Step 4: Simplify right side
    12,525.44x = 124,802,080.32
  5. Step 5: Solve for x
    x = 124,802,080.32/12,525.44
  6. Step 6: Final answer
    x = 9,963.89

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Half scale
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Double scale
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Similar ratio
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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.