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Finding the Fourth Proportional to 52,391.97, 72,302.54 and 28,520.23

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Solution

The fourth proportional to 52,391.97, 72,302.54 and 28,520.23 is: 39,358.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,391.97 : 72,302.54 = 28,520.23 : x
  2. Step 2: Convert to fraction form
    52,391.97/72,302.54 = 28,520.23/x
  3. Step 3: Cross multiply
    52,391.97x = 72,302.54 × 28,520.23
  4. Step 4: Simplify right side
    52,391.97x = 2,062,085,141.68
  5. Step 5: Solve for x
    x = 2,062,085,141.68/52,391.97
  6. Step 6: Final answer
    x = 39,358.81

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Double scale
Find fourth proportional to 52,392.97, 72,303.92 and 28,521.23
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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.