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Finding the Fourth Proportional to 99,798.48, 149,644.26 and 40,603.68

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Solution

The fourth proportional to 99,798.48, 149,644.26 and 40,603.68 is: 60,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,798.48 : 149,644.26 = 40,603.68 : x
  2. Step 2: Convert to fraction form
    99,798.48/149,644.26 = 40,603.68/x
  3. Step 3: Cross multiply
    99,798.48x = 149,644.26 × 40,603.68
  4. Step 4: Simplify right side
    99,798.48x = 6,076,107,646.88
  5. Step 5: Solve for x
    x = 6,076,107,646.88/99,798.48
  6. Step 6: Final answer
    x = 60,883.77

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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.