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Finding the Fourth Proportional to 22,376.40, 33,583.80 and 9,915.60

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Solution

The fourth proportional to 22,376.40, 33,583.80 and 9,915.60 is: 14,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,376.40 : 33,583.80 = 9,915.60 : x
  2. Step 2: Convert to fraction form
    22,376.40/33,583.80 = 9,915.60/x
  3. Step 3: Cross multiply
    22,376.40x = 33,583.80 × 9,915.60
  4. Step 4: Simplify right side
    22,376.40x = 333,003,527.28
  5. Step 5: Solve for x
    x = 333,003,527.28/22,376.40
  6. Step 6: Final answer
    x = 14,881.91

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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.