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Finding the Fourth Proportional to 38,597.80, 53,265.92 and 21,601.90

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Solution

The fourth proportional to 38,597.80, 53,265.92 and 21,601.90 is: 29,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,597.80 : 53,265.92 = 21,601.90 : x
  2. Step 2: Convert to fraction form
    38,597.80/53,265.92 = 21,601.90/x
  3. Step 3: Cross multiply
    38,597.80x = 53,265.92 × 21,601.90
  4. Step 4: Simplify right side
    38,597.80x = 1,150,645,077.25
  5. Step 5: Solve for x
    x = 1,150,645,077.25/38,597.80
  6. Step 6: Final answer
    x = 29,811.16

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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.