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Finding the Fourth Proportional to 1,168,193.61, 1,741,978.78 and 1,126,563.39

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Solution

The fourth proportional to 1,168,193.61, 1,741,978.78 and 1,126,563.39 is: 1,679,900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168,193.61 : 1,741,978.78 = 1,126,563.39 : x
  2. Step 2: Convert to fraction form
    1,168,193.61/1,741,978.78 = 1,126,563.39/x
  3. Step 3: Cross multiply
    1,168,193.61x = 1,741,978.78 × 1,126,563.39
  4. Step 4: Simplify right side
    1,168,193.61x = 1,962,449,516,888.46
  5. Step 5: Solve for x
    x = 1,962,449,516,888.46/1,168,193.61
  6. Step 6: Final answer
    x = 1,679,900.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.