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Finding the Fourth Proportional to 365,416.80, 548,125.20 and 99,210.30

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Solution

The fourth proportional to 365,416.80, 548,125.20 and 99,210.30 is: 148,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,416.80 : 548,125.20 = 99,210.30 : x
  2. Step 2: Convert to fraction form
    365,416.80/548,125.20 = 99,210.30/x
  3. Step 3: Cross multiply
    365,416.80x = 548,125.20 × 99,210.30
  4. Step 4: Simplify right side
    365,416.80x = 54,379,665,529.56
  5. Step 5: Solve for x
    x = 54,379,665,529.56/365,416.80
  6. Step 6: Final answer
    x = 148,815.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.