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Finding the Fourth Proportional to 28,593.25, 42,889.88 and 7,816.75

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Solution

The fourth proportional to 28,593.25, 42,889.88 and 7,816.75 is: 11,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,593.25 : 42,889.88 = 7,816.75 : x
  2. Step 2: Convert to fraction form
    28,593.25/42,889.88 = 7,816.75/x
  3. Step 3: Cross multiply
    28,593.25x = 42,889.88 × 7,816.75
  4. Step 4: Simplify right side
    28,593.25x = 335,259,430.41
  5. Step 5: Solve for x
    x = 335,259,430.41/28,593.25
  6. Step 6: Final answer
    x = 11,725.13

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.