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Finding the Fourth Proportional to 98,790.90, 148,181.12 and 27,718.48

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Solution

The fourth proportional to 98,790.90, 148,181.12 and 27,718.48 is: 41,576.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,790.90 : 148,181.12 = 27,718.48 : x
  2. Step 2: Convert to fraction form
    98,790.90/148,181.12 = 27,718.48/x
  3. Step 3: Cross multiply
    98,790.90x = 148,181.12 × 27,718.48
  4. Step 4: Simplify right side
    98,790.90x = 4,107,355,272.51
  5. Step 5: Solve for x
    x = 4,107,355,272.51/98,790.90
  6. Step 6: Final answer
    x = 41,576.25

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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.