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Finding the Fourth Proportional to 1,372,259, 1,893,717.60 and 768,647

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Solution

The fourth proportional to 1,372,259, 1,893,717.60 and 768,647 is: 1,060,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,259 : 1,893,717.60 = 768,647 : x
  2. Step 2: Convert to fraction form
    1,372,259/1,893,717.60 = 768,647/x
  3. Step 3: Cross multiply
    1,372,259x = 1,893,717.60 × 768,647
  4. Step 4: Simplify right side
    1,372,259x = 1,455,600,352,087.20
  5. Step 5: Solve for x
    x = 1,455,600,352,087.20/1,372,259
  6. Step 6: Final answer
    x = 1,060,732.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.