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Finding the Fourth Proportional to 22,405.57, 33,587.58 and 9,918.94

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Solution

The fourth proportional to 22,405.57, 33,587.58 and 9,918.94 is: 14,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.57 : 33,587.58 = 9,918.94 : x
  2. Step 2: Convert to fraction form
    22,405.57/33,587.58 = 9,918.94/x
  3. Step 3: Cross multiply
    22,405.57x = 33,587.58 × 9,918.94
  4. Step 4: Simplify right side
    22,405.57x = 333,153,190.77
  5. Step 5: Solve for x
    x = 333,153,190.77/22,405.57
  6. Step 6: Final answer
    x = 14,869.21

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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.