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Finding the Fourth Proportional to 362,590.20, 543,885.30 and 248,428.80

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Solution

The fourth proportional to 362,590.20, 543,885.30 and 248,428.80 is: 372,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,590.20 : 543,885.30 = 248,428.80 : x
  2. Step 2: Convert to fraction form
    362,590.20/543,885.30 = 248,428.80/x
  3. Step 3: Cross multiply
    362,590.20x = 543,885.30 × 248,428.80
  4. Step 4: Simplify right side
    362,590.20x = 135,116,772,416.64
  5. Step 5: Solve for x
    x = 135,116,772,416.64/362,590.20
  6. Step 6: Final answer
    x = 372,643.20

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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.