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Finding the Fourth Proportional to 98,556.80, 136,008.40 and 53,234.80

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Solution

The fourth proportional to 98,556.80, 136,008.40 and 53,234.80 is: 73,464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,556.80 : 136,008.40 = 53,234.80 : x
  2. Step 2: Convert to fraction form
    98,556.80/136,008.40 = 53,234.80/x
  3. Step 3: Cross multiply
    98,556.80x = 136,008.40 × 53,234.80
  4. Step 4: Simplify right side
    98,556.80x = 7,240,379,972.32
  5. Step 5: Solve for x
    x = 7,240,379,972.32/98,556.80
  6. Step 6: Final answer
    x = 73,464.03

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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.