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Finding the Fourth Proportional to 398,768.40, 598,152.60 and 232,880.40

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Solution

The fourth proportional to 398,768.40, 598,152.60 and 232,880.40 is: 349,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,768.40 : 598,152.60 = 232,880.40 : x
  2. Step 2: Convert to fraction form
    398,768.40/598,152.60 = 232,880.40/x
  3. Step 3: Cross multiply
    398,768.40x = 598,152.60 × 232,880.40
  4. Step 4: Simplify right side
    398,768.40x = 139,298,016,749.04
  5. Step 5: Solve for x
    x = 139,298,016,749.04/398,768.40
  6. Step 6: Final answer
    x = 349,320.60

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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.