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Finding the Fourth Proportional to 543,485.84, 811,568.95 and 443,843.69

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Solution

The fourth proportional to 543,485.84, 811,568.95 and 443,843.69 is: 662,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,485.84 : 811,568.95 = 443,843.69 : x
  2. Step 2: Convert to fraction form
    543,485.84/811,568.95 = 443,843.69/x
  3. Step 3: Cross multiply
    543,485.84x = 811,568.95 × 443,843.69
  4. Step 4: Simplify right side
    543,485.84x = 360,209,752,289.97
  5. Step 5: Solve for x
    x = 360,209,752,289.97/543,485.84
  6. Step 6: Final answer
    x = 662,776.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.