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Finding the Fourth Proportional to 17,703.65, 26,530.69 and 13,315.97

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Solution

The fourth proportional to 17,703.65, 26,530.69 and 13,315.97 is: 19,955.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,703.65 : 26,530.69 = 13,315.97 : x
  2. Step 2: Convert to fraction form
    17,703.65/26,530.69 = 13,315.97/x
  3. Step 3: Cross multiply
    17,703.65x = 26,530.69 × 13,315.97
  4. Step 4: Simplify right side
    17,703.65x = 353,281,706.18
  5. Step 5: Solve for x
    x = 353,281,706.18/17,703.65
  6. Step 6: Final answer
    x = 19,955.31

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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.