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Finding the Fourth Proportional to 492,269.12, 738,403.60 and 118,292.12

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Solution

The fourth proportional to 492,269.12, 738,403.60 and 118,292.12 is: 177,438.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,269.12 : 738,403.60 = 118,292.12 : x
  2. Step 2: Convert to fraction form
    492,269.12/738,403.60 = 118,292.12/x
  3. Step 3: Cross multiply
    492,269.12x = 738,403.60 × 118,292.12
  4. Step 4: Simplify right side
    492,269.12x = 87,347,327,259.63
  5. Step 5: Solve for x
    x = 87,347,327,259.63/492,269.12
  6. Step 6: Final answer
    x = 177,438.16

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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.