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Finding the Fourth Proportional to 14,507.78, 20,026.86 and 9,798.44

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Solution

The fourth proportional to 14,507.78, 20,026.86 and 9,798.44 is: 13,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.78 : 20,026.86 = 9,798.44 : x
  2. Step 2: Convert to fraction form
    14,507.78/20,026.86 = 9,798.44/x
  3. Step 3: Cross multiply
    14,507.78x = 20,026.86 × 9,798.44
  4. Step 4: Simplify right side
    14,507.78x = 196,231,986.10
  5. Step 5: Solve for x
    x = 196,231,986.10/14,507.78
  6. Step 6: Final answer
    x = 13,525.98

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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.