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Finding the Fourth Proportional to 425,690.84, 638,688.92 and 182,429.84

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Solution

The fourth proportional to 425,690.84, 638,688.92 and 182,429.84 is: 273,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,690.84 : 638,688.92 = 182,429.84 : x
  2. Step 2: Convert to fraction form
    425,690.84/638,688.92 = 182,429.84/x
  3. Step 3: Cross multiply
    425,690.84x = 638,688.92 × 182,429.84
  4. Step 4: Simplify right side
    425,690.84x = 116,515,917,485.37
  5. Step 5: Solve for x
    x = 116,515,917,485.37/425,690.84
  6. Step 6: Final answer
    x = 273,710.18

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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.