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Finding the Fourth Proportional to 15,798.56, 21,801.96 and 9,511.28

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Solution

The fourth proportional to 15,798.56, 21,801.96 and 9,511.28 is: 13,125.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.56 : 21,801.96 = 9,511.28 : x
  2. Step 2: Convert to fraction form
    15,798.56/21,801.96 = 9,511.28/x
  3. Step 3: Cross multiply
    15,798.56x = 21,801.96 × 9,511.28
  4. Step 4: Simplify right side
    15,798.56x = 207,364,546.11
  5. Step 5: Solve for x
    x = 207,364,546.11/15,798.56
  6. Step 6: Final answer
    x = 13,125.53

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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.