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Finding the Fourth Proportional to 19,925.52, 27,515.88 and 12,486.48

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Solution

The fourth proportional to 19,925.52, 27,515.88 and 12,486.48 is: 17,243.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.52 : 27,515.88 = 12,486.48 : x
  2. Step 2: Convert to fraction form
    19,925.52/27,515.88 = 12,486.48/x
  3. Step 3: Cross multiply
    19,925.52x = 27,515.88 × 12,486.48
  4. Step 4: Simplify right side
    19,925.52x = 343,576,485.30
  5. Step 5: Solve for x
    x = 343,576,485.30/19,925.52
  6. Step 6: Final answer
    x = 17,243.04

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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.