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Finding the Fourth Proportional to 291,342.25, 437,013.51 and 80,982.01

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Solution

The fourth proportional to 291,342.25, 437,013.51 and 80,982.01 is: 121,473.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,342.25 : 437,013.51 = 80,982.01 : x
  2. Step 2: Convert to fraction form
    291,342.25/437,013.51 = 80,982.01/x
  3. Step 3: Cross multiply
    291,342.25x = 437,013.51 × 80,982.01
  4. Step 4: Simplify right side
    291,342.25x = 35,390,232,436.96
  5. Step 5: Solve for x
    x = 35,390,232,436.96/291,342.25
  6. Step 6: Final answer
    x = 121,473.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.