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Finding the Fourth Proportional to 98,798.48, 136,341.96 and 54,086.48

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Solution

The fourth proportional to 98,798.48, 136,341.96 and 54,086.48 is: 74,639.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,798.48 : 136,341.96 = 54,086.48 : x
  2. Step 2: Convert to fraction form
    98,798.48/136,341.96 = 54,086.48/x
  3. Step 3: Cross multiply
    98,798.48x = 136,341.96 × 54,086.48
  4. Step 4: Simplify right side
    98,798.48x = 7,374,256,692.70
  5. Step 5: Solve for x
    x = 7,374,256,692.70/98,798.48
  6. Step 6: Final answer
    x = 74,639.37

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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.