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Finding the Fourth Proportional to 155,321.97, 232,835.28 and 99,003.98

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Solution

The fourth proportional to 155,321.97, 232,835.28 and 99,003.98 is: 148,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,321.97 : 232,835.28 = 99,003.98 : x
  2. Step 2: Convert to fraction form
    155,321.97/232,835.28 = 99,003.98/x
  3. Step 3: Cross multiply
    155,321.97x = 232,835.28 × 99,003.98
  4. Step 4: Simplify right side
    155,321.97x = 23,051,618,240.24
  5. Step 5: Solve for x
    x = 23,051,618,240.24/155,321.97
  6. Step 6: Final answer
    x = 148,411.83

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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.