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Finding the Fourth Proportional to 12,915.03, 17,824.62 and 7,252.12

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Solution

The fourth proportional to 12,915.03, 17,824.62 and 7,252.12 is: 10,008.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.03 : 17,824.62 = 7,252.12 : x
  2. Step 2: Convert to fraction form
    12,915.03/17,824.62 = 7,252.12/x
  3. Step 3: Cross multiply
    12,915.03x = 17,824.62 × 7,252.12
  4. Step 4: Simplify right side
    12,915.03x = 129,266,283.19
  5. Step 5: Solve for x
    x = 129,266,283.19/12,915.03
  6. Step 6: Final answer
    x = 10,008.98

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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.