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Finding the Fourth Proportional to 55,057.93, 75,980.03 and 29,907.43

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Solution

The fourth proportional to 55,057.93, 75,980.03 and 29,907.43 is: 41,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,057.93 : 75,980.03 = 29,907.43 : x
  2. Step 2: Convert to fraction form
    55,057.93/75,980.03 = 29,907.43/x
  3. Step 3: Cross multiply
    55,057.93x = 75,980.03 × 29,907.43
  4. Step 4: Simplify right side
    55,057.93x = 2,272,367,089.14
  5. Step 5: Solve for x
    x = 2,272,367,089.14/55,057.93
  6. Step 6: Final answer
    x = 41,272.30

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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.