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Finding the Fourth Proportional to 646,643.30, 969,965.15 and 197,366.67

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Solution

The fourth proportional to 646,643.30, 969,965.15 and 197,366.67 is: 296,050.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,643.30 : 969,965.15 = 197,366.67 : x
  2. Step 2: Convert to fraction form
    646,643.30/969,965.15 = 197,366.67/x
  3. Step 3: Cross multiply
    646,643.30x = 969,965.15 × 197,366.67
  4. Step 4: Simplify right side
    646,643.30x = 191,438,790,684.72
  5. Step 5: Solve for x
    x = 191,438,790,684.72/646,643.30
  6. Step 6: Final answer
    x = 296,050.07

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Double scale
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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.