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Finding the Fourth Proportional to 98,293.98, 147,439.75 and 69,323.30

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Solution

The fourth proportional to 98,293.98, 147,439.75 and 69,323.30 is: 103,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,293.98 : 147,439.75 = 69,323.30 : x
  2. Step 2: Convert to fraction form
    98,293.98/147,439.75 = 69,323.30/x
  3. Step 3: Cross multiply
    98,293.98x = 147,439.75 × 69,323.30
  4. Step 4: Simplify right side
    98,293.98x = 10,221,010,021.18
  5. Step 5: Solve for x
    x = 10,221,010,021.18/98,293.98
  6. Step 6: Final answer
    x = 103,984.09

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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.