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Finding the Fourth Proportional to 483,235.60, 724,853.40 and 438,912.40

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Solution

The fourth proportional to 483,235.60, 724,853.40 and 438,912.40 is: 658,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,235.60 : 724,853.40 = 438,912.40 : x
  2. Step 2: Convert to fraction form
    483,235.60/724,853.40 = 438,912.40/x
  3. Step 3: Cross multiply
    483,235.60x = 724,853.40 × 438,912.40
  4. Step 4: Simplify right side
    483,235.60x = 318,147,145,442.16
  5. Step 5: Solve for x
    x = 318,147,145,442.16/483,235.60
  6. Step 6: Final answer
    x = 658,368.60

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Similar ratio
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1.5x scale

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.