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Finding the Fourth Proportional to 425,543.44, 638,226.72 and 125,953.75

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Solution

The fourth proportional to 425,543.44, 638,226.72 and 125,953.75 is: 188,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,543.44 : 638,226.72 = 125,953.75 : x
  2. Step 2: Convert to fraction form
    425,543.44/638,226.72 = 125,953.75/x
  3. Step 3: Cross multiply
    425,543.44x = 638,226.72 × 125,953.75
  4. Step 4: Simplify right side
    425,543.44x = 80,387,048,734.20
  5. Step 5: Solve for x
    x = 80,387,048,734.20/425,543.44
  6. Step 6: Final answer
    x = 188,904.45

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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.