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Finding the Fourth Proportional to 70,124.58, 96,780.24 and 39,917.16

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Solution

The fourth proportional to 70,124.58, 96,780.24 and 39,917.16 is: 55,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,124.58 : 96,780.24 = 39,917.16 : x
  2. Step 2: Convert to fraction form
    70,124.58/96,780.24 = 39,917.16/x
  3. Step 3: Cross multiply
    70,124.58x = 96,780.24 × 39,917.16
  4. Step 4: Simplify right side
    70,124.58x = 3,863,192,324.92
  5. Step 5: Solve for x
    x = 3,863,192,324.92/70,124.58
  6. Step 6: Final answer
    x = 55,090.42

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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.