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Finding the Fourth Proportional to 21,374.91, 29,497.46 and 11,943.63

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Solution

The fourth proportional to 21,374.91, 29,497.46 and 11,943.63 is: 16,482.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.91 : 29,497.46 = 11,943.63 : x
  2. Step 2: Convert to fraction form
    21,374.91/29,497.46 = 11,943.63/x
  3. Step 3: Cross multiply
    21,374.91x = 29,497.46 × 11,943.63
  4. Step 4: Simplify right side
    21,374.91x = 352,306,688.46
  5. Step 5: Solve for x
    x = 352,306,688.46/21,374.91
  6. Step 6: Final answer
    x = 16,482.25

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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.