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Finding the Fourth Proportional to 98,556.80, 147,908.10 and 65,265.80

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Solution

The fourth proportional to 98,556.80, 147,908.10 and 65,265.80 is: 97,946.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,556.80 : 147,908.10 = 65,265.80 : x
  2. Step 2: Convert to fraction form
    98,556.80/147,908.10 = 65,265.80/x
  3. Step 3: Cross multiply
    98,556.80x = 147,908.10 × 65,265.80
  4. Step 4: Simplify right side
    98,556.80x = 9,653,340,472.98
  5. Step 5: Solve for x
    x = 9,653,340,472.98/98,556.80
  6. Step 6: Final answer
    x = 97,946.98

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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.