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Finding the Fourth Proportional to 609,207.40, 913,811.10 and 451,743.40

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Solution

The fourth proportional to 609,207.40, 913,811.10 and 451,743.40 is: 677,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,207.40 : 913,811.10 = 451,743.40 : x
  2. Step 2: Convert to fraction form
    609,207.40/913,811.10 = 451,743.40/x
  3. Step 3: Cross multiply
    609,207.40x = 913,811.10 × 451,743.40
  4. Step 4: Simplify right side
    609,207.40x = 412,808,133,271.74
  5. Step 5: Solve for x
    x = 412,808,133,271.74/609,207.40
  6. Step 6: Final answer
    x = 677,615.10

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Half scale
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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.