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Finding the Fourth Proportional to 425,865.98, 638,798.98 and 110,322.92

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Solution

The fourth proportional to 425,865.98, 638,798.98 and 110,322.92 is: 165,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,865.98 : 638,798.98 = 110,322.92 : x
  2. Step 2: Convert to fraction form
    425,865.98/638,798.98 = 110,322.92/x
  3. Step 3: Cross multiply
    425,865.98x = 638,798.98 × 110,322.92
  4. Step 4: Simplify right side
    425,865.98x = 70,474,168,766.62
  5. Step 5: Solve for x
    x = 70,474,168,766.62/425,865.98
  6. Step 6: Final answer
    x = 165,484.38

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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.