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Finding the Fourth Proportional to 98,328.99, 135,705.66 and 55,893.90

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Solution

The fourth proportional to 98,328.99, 135,705.66 and 55,893.90 is: 77,140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,328.99 : 135,705.66 = 55,893.90 : x
  2. Step 2: Convert to fraction form
    98,328.99/135,705.66 = 55,893.90/x
  3. Step 3: Cross multiply
    98,328.99x = 135,705.66 × 55,893.90
  4. Step 4: Simplify right side
    98,328.99x = 7,585,118,589.47
  5. Step 5: Solve for x
    x = 7,585,118,589.47/98,328.99
  6. Step 6: Final answer
    x = 77,140.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.