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Finding the Fourth Proportional to 98,004.80, 135,242.88 and 53,292.80

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Solution

The fourth proportional to 98,004.80, 135,242.88 and 53,292.80 is: 73,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,004.80 : 135,242.88 = 53,292.80 : x
  2. Step 2: Convert to fraction form
    98,004.80/135,242.88 = 53,292.80/x
  3. Step 3: Cross multiply
    98,004.80x = 135,242.88 × 53,292.80
  4. Step 4: Simplify right side
    98,004.80x = 7,207,471,755.26
  5. Step 5: Solve for x
    x = 7,207,471,755.26/98,004.80
  6. Step 6: Final answer
    x = 73,542.03

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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.