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Finding the Fourth Proportional to 86,209.97, 118,970.91 and 48,484.22

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Solution

The fourth proportional to 86,209.97, 118,970.91 and 48,484.22 is: 66,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.97 : 118,970.91 = 48,484.22 : x
  2. Step 2: Convert to fraction form
    86,209.97/118,970.91 = 48,484.22/x
  3. Step 3: Cross multiply
    86,209.97x = 118,970.91 × 48,484.22
  4. Step 4: Simplify right side
    86,209.97x = 5,768,211,179.19
  5. Step 5: Solve for x
    x = 5,768,211,179.19/86,209.97
  6. Step 6: Final answer
    x = 66,908.87

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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.