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Finding the Fourth Proportional to 98,791.72, 136,331.52 and 53,468.76

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Solution

The fourth proportional to 98,791.72, 136,331.52 and 53,468.76 is: 73,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,791.72 : 136,331.52 = 53,468.76 : x
  2. Step 2: Convert to fraction form
    98,791.72/136,331.52 = 53,468.76/x
  3. Step 3: Cross multiply
    98,791.72x = 136,331.52 × 53,468.76
  4. Step 4: Simplify right side
    98,791.72x = 7,289,477,323.32
  5. Step 5: Solve for x
    x = 7,289,477,323.32/98,791.72
  6. Step 6: Final answer
    x = 73,786.32

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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.