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Finding the Fourth Proportional to 19,456.61, 26,848.29 and 11,497.31

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Solution

The fourth proportional to 19,456.61, 26,848.29 and 11,497.31 is: 15,865.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,456.61 : 26,848.29 = 11,497.31 : x
  2. Step 2: Convert to fraction form
    19,456.61/26,848.29 = 11,497.31/x
  3. Step 3: Cross multiply
    19,456.61x = 26,848.29 × 11,497.31
  4. Step 4: Simplify right side
    19,456.61x = 308,683,122.65
  5. Step 5: Solve for x
    x = 308,683,122.65/19,456.61
  6. Step 6: Final answer
    x = 15,865.21

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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.