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Finding the Fourth Proportional to 525,911.46, 726,235.82 and 396,628.49

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Solution

The fourth proportional to 525,911.46, 726,235.82 and 396,628.49 is: 547,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,911.46 : 726,235.82 = 396,628.49 : x
  2. Step 2: Convert to fraction form
    525,911.46/726,235.82 = 396,628.49/x
  3. Step 3: Cross multiply
    525,911.46x = 726,235.82 × 396,628.49
  4. Step 4: Simplify right side
    525,911.46x = 288,045,811,056.19
  5. Step 5: Solve for x
    x = 288,045,811,056.19/525,911.46
  6. Step 6: Final answer
    x = 547,707.80

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Double scale
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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.