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Finding the Fourth Proportional to 14,953.54, 20,630.70 and 9,205.08

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Solution

The fourth proportional to 14,953.54, 20,630.70 and 9,205.08 is: 12,699.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,953.54 : 20,630.70 = 9,205.08 : x
  2. Step 2: Convert to fraction form
    14,953.54/20,630.70 = 9,205.08/x
  3. Step 3: Cross multiply
    14,953.54x = 20,630.70 × 9,205.08
  4. Step 4: Simplify right side
    14,953.54x = 189,907,243.96
  5. Step 5: Solve for x
    x = 189,907,243.96/14,953.54
  6. Step 6: Final answer
    x = 12,699.82

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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.