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Finding the Fourth Proportional to 72,803.80, 109,254.30 and 41,213.80

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Solution

The fourth proportional to 72,803.80, 109,254.30 and 41,213.80 is: 61,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,803.80 : 109,254.30 = 41,213.80 : x
  2. Step 2: Convert to fraction form
    72,803.80/109,254.30 = 41,213.80/x
  3. Step 3: Cross multiply
    72,803.80x = 109,254.30 × 41,213.80
  4. Step 4: Simplify right side
    72,803.80x = 4,502,784,869.34
  5. Step 5: Solve for x
    x = 4,502,784,869.34/72,803.80
  6. Step 6: Final answer
    x = 61,848.21

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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.