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Finding the Fourth Proportional to 22,319.64, 33,479.46 and 9,999

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Solution

The fourth proportional to 22,319.64, 33,479.46 and 9,999 is: 14,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,319.64 : 33,479.46 = 9,999 : x
  2. Step 2: Convert to fraction form
    22,319.64/33,479.46 = 9,999/x
  3. Step 3: Cross multiply
    22,319.64x = 33,479.46 × 9,999
  4. Step 4: Simplify right side
    22,319.64x = 334,761,120.54
  5. Step 5: Solve for x
    x = 334,761,120.54/22,319.64
  6. Step 6: Final answer
    x = 14,998.50

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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.