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Finding the Fourth Proportional to 53,185.70, 79,794.20 and 15,746.78

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Solution

The fourth proportional to 53,185.70, 79,794.20 and 15,746.78 is: 23,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,185.70 : 79,794.20 = 15,746.78 : x
  2. Step 2: Convert to fraction form
    53,185.70/79,794.20 = 15,746.78/x
  3. Step 3: Cross multiply
    53,185.70x = 79,794.20 × 15,746.78
  4. Step 4: Simplify right side
    53,185.70x = 1,256,501,712.68
  5. Step 5: Solve for x
    x = 1,256,501,712.68/53,185.70
  6. Step 6: Final answer
    x = 23,624.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.