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Finding the Fourth Proportional to 15,998.98, 22,078.56 and 8,924.98

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Solution

The fourth proportional to 15,998.98, 22,078.56 and 8,924.98 is: 12,316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,998.98 : 22,078.56 = 8,924.98 : x
  2. Step 2: Convert to fraction form
    15,998.98/22,078.56 = 8,924.98/x
  3. Step 3: Cross multiply
    15,998.98x = 22,078.56 × 8,924.98
  4. Step 4: Simplify right side
    15,998.98x = 197,050,706.43
  5. Step 5: Solve for x
    x = 197,050,706.43/15,998.98
  6. Step 6: Final answer
    x = 12,316.45

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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.