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Finding the Fourth Proportional to 608,768.10, 913,152.15 and 398,643.30

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Solution

The fourth proportional to 608,768.10, 913,152.15 and 398,643.30 is: 597,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,768.10 : 913,152.15 = 398,643.30 : x
  2. Step 2: Convert to fraction form
    608,768.10/913,152.15 = 398,643.30/x
  3. Step 3: Cross multiply
    608,768.10x = 913,152.15 × 398,643.30
  4. Step 4: Simplify right side
    608,768.10x = 364,021,986,478.10
  5. Step 5: Solve for x
    x = 364,021,986,478.10/608,768.10
  6. Step 6: Final answer
    x = 597,964.95

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Double scale
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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.