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Finding the Fourth Proportional to 610,680.92, 842,716.86 and 342,391.64

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Solution

The fourth proportional to 610,680.92, 842,716.86 and 342,391.64 is: 472,487.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,680.92 : 842,716.86 = 342,391.64 : x
  2. Step 2: Convert to fraction form
    610,680.92/842,716.86 = 342,391.64/x
  3. Step 3: Cross multiply
    610,680.92x = 842,716.86 × 342,391.64
  4. Step 4: Simplify right side
    610,680.92x = 288,539,207,751.05
  5. Step 5: Solve for x
    x = 288,539,207,751.05/610,680.92
  6. Step 6: Final answer
    x = 472,487.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.