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Finding the Fourth Proportional to 12,397.65, 17,108.73 and 6,808.65

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Solution

The fourth proportional to 12,397.65, 17,108.73 and 6,808.65 is: 9,395.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,397.65 : 17,108.73 = 6,808.65 : x
  2. Step 2: Convert to fraction form
    12,397.65/17,108.73 = 6,808.65/x
  3. Step 3: Cross multiply
    12,397.65x = 17,108.73 × 6,808.65
  4. Step 4: Simplify right side
    12,397.65x = 116,487,354.51
  5. Step 5: Solve for x
    x = 116,487,354.51/12,397.65
  6. Step 6: Final answer
    x = 9,395.92

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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.