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Finding the Fourth Proportional to 98,282.22, 135,629.46 and 55,840.80

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Solution

The fourth proportional to 98,282.22, 135,629.46 and 55,840.80 is: 77,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,282.22 : 135,629.46 = 55,840.80 : x
  2. Step 2: Convert to fraction form
    98,282.22/135,629.46 = 55,840.80/x
  3. Step 3: Cross multiply
    98,282.22x = 135,629.46 × 55,840.80
  4. Step 4: Simplify right side
    98,282.22x = 7,573,657,549.97
  5. Step 5: Solve for x
    x = 7,573,657,549.97/98,282.22
  6. Step 6: Final answer
    x = 77,060.30

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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.