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Finding the Fourth Proportional to 19,915.67, 27,483.41 and 10,962.99

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Solution

The fourth proportional to 19,915.67, 27,483.41 and 10,962.99 is: 15,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.67 : 27,483.41 = 10,962.99 : x
  2. Step 2: Convert to fraction form
    19,915.67/27,483.41 = 10,962.99/x
  3. Step 3: Cross multiply
    19,915.67x = 27,483.41 × 10,962.99
  4. Step 4: Simplify right side
    19,915.67x = 301,300,294.18
  5. Step 5: Solve for x
    x = 301,300,294.18/19,915.67
  6. Step 6: Final answer
    x = 15,128.81

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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.