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Finding the Fourth Proportional to 14,953.63, 20,636.55 and 9,291.50

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Solution

The fourth proportional to 14,953.63, 20,636.55 and 9,291.50 is: 12,822.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,953.63 : 20,636.55 = 9,291.50 : x
  2. Step 2: Convert to fraction form
    14,953.63/20,636.55 = 9,291.50/x
  3. Step 3: Cross multiply
    14,953.63x = 20,636.55 × 9,291.50
  4. Step 4: Simplify right side
    14,953.63x = 191,744,504.33
  5. Step 5: Solve for x
    x = 191,744,504.33/14,953.63
  6. Step 6: Final answer
    x = 12,822.61

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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.