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Finding the Fourth Proportional to 353,804.93, 488,262.83 and 198,783.53

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Solution

The fourth proportional to 353,804.93, 488,262.83 and 198,783.53 is: 274,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,804.93 : 488,262.83 = 198,783.53 : x
  2. Step 2: Convert to fraction form
    353,804.93/488,262.83 = 198,783.53/x
  3. Step 3: Cross multiply
    353,804.93x = 488,262.83 × 198,783.53
  4. Step 4: Simplify right side
    353,804.93x = 97,058,608,915.19
  5. Step 5: Solve for x
    x = 97,058,608,915.19/353,804.93
  6. Step 6: Final answer
    x = 274,328.03

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1.5x scale

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.