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Finding the Fourth Proportional to 620,893.92, 931,314.96 and 177,661.92

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Solution

The fourth proportional to 620,893.92, 931,314.96 and 177,661.92 is: 266,485.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,893.92 : 931,314.96 = 177,661.92 : x
  2. Step 2: Convert to fraction form
    620,893.92/931,314.96 = 177,661.92/x
  3. Step 3: Cross multiply
    620,893.92x = 931,314.96 × 177,661.92
  4. Step 4: Simplify right side
    620,893.92x = 165,459,203,918.32
  5. Step 5: Solve for x
    x = 165,459,203,918.32/620,893.92
  6. Step 6: Final answer
    x = 266,485.46

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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.