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Finding the Fourth Proportional to 98,467.72, 147,749.77 and 61,017.77

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Solution

The fourth proportional to 98,467.72, 147,749.77 and 61,017.77 is: 91,556.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,467.72 : 147,749.77 = 61,017.77 : x
  2. Step 2: Convert to fraction form
    98,467.72/147,749.77 = 61,017.77/x
  3. Step 3: Cross multiply
    98,467.72x = 147,749.77 × 61,017.77
  4. Step 4: Simplify right side
    98,467.72x = 9,015,361,483.41
  5. Step 5: Solve for x
    x = 9,015,361,483.41/98,467.72
  6. Step 6: Final answer
    x = 91,556.52

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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.