Home / 217,973.86-326,961.91-66,172.26

Finding the Fourth Proportional to 217,973.86, 326,961.91 and 66,172.26

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Solution

The fourth proportional to 217,973.86, 326,961.91 and 66,172.26 is: 99,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,973.86 : 326,961.91 = 66,172.26 : x
  2. Step 2: Convert to fraction form
    217,973.86/326,961.91 = 66,172.26/x
  3. Step 3: Cross multiply
    217,973.86x = 326,961.91 × 66,172.26
  4. Step 4: Simplify right side
    217,973.86x = 21,635,808,518.62
  5. Step 5: Solve for x
    x = 21,635,808,518.62/217,973.86
  6. Step 6: Final answer
    x = 99,258.73

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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.