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Finding the Fourth Proportional to 543,517.65, 811,616.54 and 443,875.65

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Solution

The fourth proportional to 543,517.65, 811,616.54 and 443,875.65 is: 662,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,517.65 : 811,616.54 = 443,875.65 : x
  2. Step 2: Convert to fraction form
    543,517.65/811,616.54 = 443,875.65/x
  3. Step 3: Cross multiply
    543,517.65x = 811,616.54 × 443,875.65
  4. Step 4: Simplify right side
    543,517.65x = 360,256,820,352.94
  5. Step 5: Solve for x
    x = 360,256,820,352.94/543,517.65
  6. Step 6: Final answer
    x = 662,824.51

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Double scale
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Similar ratio
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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.