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Finding the Fourth Proportional to 39,475.97, 54,476.98 and 21,570.98

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Solution

The fourth proportional to 39,475.97, 54,476.98 and 21,570.98 is: 29,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,475.97 : 54,476.98 = 21,570.98 : x
  2. Step 2: Convert to fraction form
    39,475.97/54,476.98 = 21,570.98/x
  3. Step 3: Cross multiply
    39,475.97x = 54,476.98 × 21,570.98
  4. Step 4: Simplify right side
    39,475.97x = 1,175,121,695.31
  5. Step 5: Solve for x
    x = 1,175,121,695.31/39,475.97
  6. Step 6: Final answer
    x = 29,768.02

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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.