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Finding the Fourth Proportional to 458,386.05, 687,563.94 and 188,504.85

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Solution

The fourth proportional to 458,386.05, 687,563.94 and 188,504.85 is: 282,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,386.05 : 687,563.94 = 188,504.85 : x
  2. Step 2: Convert to fraction form
    458,386.05/687,563.94 = 188,504.85/x
  3. Step 3: Cross multiply
    458,386.05x = 687,563.94 × 188,504.85
  4. Step 4: Simplify right side
    458,386.05x = 129,609,137,375.11
  5. Step 5: Solve for x
    x = 129,609,137,375.11/458,386.05
  6. Step 6: Final answer
    x = 282,751.05

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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.