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Finding the Fourth Proportional to 282,170.58, 389,400.15 and 154,858.02

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Solution

The fourth proportional to 282,170.58, 389,400.15 and 154,858.02 is: 213,706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,170.58 : 389,400.15 = 154,858.02 : x
  2. Step 2: Convert to fraction form
    282,170.58/389,400.15 = 154,858.02/x
  3. Step 3: Cross multiply
    282,170.58x = 389,400.15 × 154,858.02
  4. Step 4: Simplify right side
    282,170.58x = 60,301,736,216.70
  5. Step 5: Solve for x
    x = 60,301,736,216.70/282,170.58
  6. Step 6: Final answer
    x = 213,706.67

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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.