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Finding the Fourth Proportional to 65,684.25, 90,644.27 and 35,876.25

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Solution

The fourth proportional to 65,684.25, 90,644.27 and 35,876.25 is: 49,509.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,684.25 : 90,644.27 = 35,876.25 : x
  2. Step 2: Convert to fraction form
    65,684.25/90,644.27 = 35,876.25/x
  3. Step 3: Cross multiply
    65,684.25x = 90,644.27 × 35,876.25
  4. Step 4: Simplify right side
    65,684.25x = 3,251,976,312.21
  5. Step 5: Solve for x
    x = 3,251,976,312.21/65,684.25
  6. Step 6: Final answer
    x = 49,509.23

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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.