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Finding the Fourth Proportional to 29,690.79, 40,973.36 and 16,078.98

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Solution

The fourth proportional to 29,690.79, 40,973.36 and 16,078.98 is: 22,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,690.79 : 40,973.36 = 16,078.98 : x
  2. Step 2: Convert to fraction form
    29,690.79/40,973.36 = 16,078.98/x
  3. Step 3: Cross multiply
    29,690.79x = 40,973.36 × 16,078.98
  4. Step 4: Simplify right side
    29,690.79x = 658,809,755.58
  5. Step 5: Solve for x
    x = 658,809,755.58/29,690.79
  6. Step 6: Final answer
    x = 22,189.03

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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.