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Finding the Fourth Proportional to 98,153.88, 135,493.16 and 66,365.68

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Solution

The fourth proportional to 98,153.88, 135,493.16 and 66,365.68 is: 91,612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,153.88 : 135,493.16 = 66,365.68 : x
  2. Step 2: Convert to fraction form
    98,153.88/135,493.16 = 66,365.68/x
  3. Step 3: Cross multiply
    98,153.88x = 135,493.16 × 66,365.68
  4. Step 4: Simplify right side
    98,153.88x = 8,992,095,698.75
  5. Step 5: Solve for x
    x = 8,992,095,698.75/98,153.88
  6. Step 6: Final answer
    x = 91,612.23

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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.