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Finding the Fourth Proportional to 70,940.03, 97,898 and 39,110.07

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Solution

The fourth proportional to 70,940.03, 97,898 and 39,110.07 is: 53,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,940.03 : 97,898 = 39,110.07 : x
  2. Step 2: Convert to fraction form
    70,940.03/97,898 = 39,110.07/x
  3. Step 3: Cross multiply
    70,940.03x = 97,898 × 39,110.07
  4. Step 4: Simplify right side
    70,940.03x = 3,828,797,632.86
  5. Step 5: Solve for x
    x = 3,828,797,632.86/70,940.03
  6. Step 6: Final answer
    x = 53,972.31

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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.