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Finding the Fourth Proportional to 15,823.37, 21,835.53 and 8,653.10

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Solution

The fourth proportional to 15,823.37, 21,835.53 and 8,653.10 is: 11,940.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.37 : 21,835.53 = 8,653.10 : x
  2. Step 2: Convert to fraction form
    15,823.37/21,835.53 = 8,653.10/x
  3. Step 3: Cross multiply
    15,823.37x = 21,835.53 × 8,653.10
  4. Step 4: Simplify right side
    15,823.37x = 188,944,915.47
  5. Step 5: Solve for x
    x = 188,944,915.47/15,823.37
  6. Step 6: Final answer
    x = 11,940.88

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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.