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Finding the Fourth Proportional to 29,640.98, 40,908.29 and 19,440.59

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Solution

The fourth proportional to 29,640.98, 40,908.29 and 19,440.59 is: 26,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,640.98 : 40,908.29 = 19,440.59 : x
  2. Step 2: Convert to fraction form
    29,640.98/40,908.29 = 19,440.59/x
  3. Step 3: Cross multiply
    29,640.98x = 40,908.29 × 19,440.59
  4. Step 4: Simplify right side
    29,640.98x = 795,280,991.75
  5. Step 5: Solve for x
    x = 795,280,991.75/29,640.98
  6. Step 6: Final answer
    x = 26,830.45

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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.