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Finding the Fourth Proportional to 29,686.61, 40,969.86 and 16,936.86

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Solution

The fourth proportional to 29,686.61, 40,969.86 and 16,936.86 is: 23,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,686.61 : 40,969.86 = 16,936.86 : x
  2. Step 2: Convert to fraction form
    29,686.61/40,969.86 = 16,936.86/x
  3. Step 3: Cross multiply
    29,686.61x = 40,969.86 × 16,936.86
  4. Step 4: Simplify right side
    29,686.61x = 693,900,783.04
  5. Step 5: Solve for x
    x = 693,900,783.04/29,686.61
  6. Step 6: Final answer
    x = 23,374.20

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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.