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Finding the Fourth Proportional to 99,076.42, 148,360.90 and 54,653.80

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Solution

The fourth proportional to 99,076.42, 148,360.90 and 54,653.80 is: 81,840.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,076.42 : 148,360.90 = 54,653.80 : x
  2. Step 2: Convert to fraction form
    99,076.42/148,360.90 = 54,653.80/x
  3. Step 3: Cross multiply
    99,076.42x = 148,360.90 × 54,653.80
  4. Step 4: Simplify right side
    99,076.42x = 8,108,486,956.42
  5. Step 5: Solve for x
    x = 8,108,486,956.42/99,076.42
  6. Step 6: Final answer
    x = 81,840.73

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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.