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Finding the Fourth Proportional to 15,858.64, 21,883.44 and 9,483.94

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Solution

The fourth proportional to 15,858.64, 21,883.44 and 9,483.94 is: 13,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.64 : 21,883.44 = 9,483.94 : x
  2. Step 2: Convert to fraction form
    15,858.64/21,883.44 = 9,483.94/x
  3. Step 3: Cross multiply
    15,858.64x = 21,883.44 × 9,483.94
  4. Step 4: Simplify right side
    15,858.64x = 207,541,231.95
  5. Step 5: Solve for x
    x = 207,541,231.95/15,858.64
  6. Step 6: Final answer
    x = 13,086.95

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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.