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Finding the Fourth Proportional to 11,605.12, 15,953.48 and 9,984.11

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Solution

The fourth proportional to 11,605.12, 15,953.48 and 9,984.11 is: 13,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,605.12 : 15,953.48 = 9,984.11 : x
  2. Step 2: Convert to fraction form
    11,605.12/15,953.48 = 9,984.11/x
  3. Step 3: Cross multiply
    11,605.12x = 15,953.48 × 9,984.11
  4. Step 4: Simplify right side
    11,605.12x = 159,281,244.40
  5. Step 5: Solve for x
    x = 159,281,244.40/11,605.12
  6. Step 6: Final answer
    x = 13,725.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.