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Finding the Fourth Proportional to 638,861.88, 958,281.44 and 189,886.28

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Solution

The fourth proportional to 638,861.88, 958,281.44 and 189,886.28 is: 284,826.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,861.88 : 958,281.44 = 189,886.28 : x
  2. Step 2: Convert to fraction form
    638,861.88/958,281.44 = 189,886.28/x
  3. Step 3: Cross multiply
    638,861.88x = 958,281.44 × 189,886.28
  4. Step 4: Simplify right side
    638,861.88x = 181,964,492,093.81
  5. Step 5: Solve for x
    x = 181,964,492,093.81/638,861.88
  6. Step 6: Final answer
    x = 284,826.03

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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.