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Finding the Fourth Proportional to 645,603.40, 968,405.10 and 196,320.70

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Solution

The fourth proportional to 645,603.40, 968,405.10 and 196,320.70 is: 294,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,603.40 : 968,405.10 = 196,320.70 : x
  2. Step 2: Convert to fraction form
    645,603.40/968,405.10 = 196,320.70/x
  3. Step 3: Cross multiply
    645,603.40x = 968,405.10 × 196,320.70
  4. Step 4: Simplify right side
    645,603.40x = 190,117,967,115.57
  5. Step 5: Solve for x
    x = 190,117,967,115.57/645,603.40
  6. Step 6: Final answer
    x = 294,481.05

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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.