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Finding the Fourth Proportional to 13,012.65, 17,957.43 and 7,044.31

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Solution

The fourth proportional to 13,012.65, 17,957.43 and 7,044.31 is: 9,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.65 : 17,957.43 = 7,044.31 : x
  2. Step 2: Convert to fraction form
    13,012.65/17,957.43 = 7,044.31/x
  3. Step 3: Cross multiply
    13,012.65x = 17,957.43 × 7,044.31
  4. Step 4: Simplify right side
    13,012.65x = 126,497,703.72
  5. Step 5: Solve for x
    x = 126,497,703.72/13,012.65
  6. Step 6: Final answer
    x = 9,721.14

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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.