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Finding the Fourth Proportional to 12,506.51, 18,759.76 and 5,929.11

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Solution

The fourth proportional to 12,506.51, 18,759.76 and 5,929.11 is: 8,893.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.51 : 18,759.76 = 5,929.11 : x
  2. Step 2: Convert to fraction form
    12,506.51/18,759.76 = 5,929.11/x
  3. Step 3: Cross multiply
    12,506.51x = 18,759.76 × 5,929.11
  4. Step 4: Simplify right side
    12,506.51x = 111,228,654.72
  5. Step 5: Solve for x
    x = 111,228,654.72/12,506.51
  6. Step 6: Final answer
    x = 8,893.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.