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Finding the Fourth Proportional to 98,241.75, 147,239.40 and 42,015.85

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Solution

The fourth proportional to 98,241.75, 147,239.40 and 42,015.85 is: 62,971.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,241.75 : 147,239.40 = 42,015.85 : x
  2. Step 2: Convert to fraction form
    98,241.75/147,239.40 = 42,015.85/x
  3. Step 3: Cross multiply
    98,241.75x = 147,239.40 × 42,015.85
  4. Step 4: Simplify right side
    98,241.75x = 6,186,388,544.49
  5. Step 5: Solve for x
    x = 6,186,388,544.49/98,241.75
  6. Step 6: Final answer
    x = 62,971.07

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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.