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Finding the Fourth Proportional to 98,328.88, 135,693.84 and 53,616.88

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Solution

The fourth proportional to 98,328.88, 135,693.84 and 53,616.88 is: 73,991.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,328.88 : 135,693.84 = 53,616.88 : x
  2. Step 2: Convert to fraction form
    98,328.88/135,693.84 = 53,616.88/x
  3. Step 3: Cross multiply
    98,328.88x = 135,693.84 × 53,616.88
  4. Step 4: Simplify right side
    98,328.88x = 7,275,480,336.02
  5. Step 5: Solve for x
    x = 7,275,480,336.02/98,328.88
  6. Step 6: Final answer
    x = 73,991.29

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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.