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Finding the Fourth Proportional to 543,630.96, 811,785.42 and 443,988.81

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Solution

The fourth proportional to 543,630.96, 811,785.42 and 443,988.81 is: 662,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,630.96 : 811,785.42 = 443,988.81 : x
  2. Step 2: Convert to fraction form
    543,630.96/811,785.42 = 443,988.81/x
  3. Step 3: Cross multiply
    543,630.96x = 811,785.42 × 443,988.81
  4. Step 4: Simplify right side
    543,630.96x = 360,423,642,601.15
  5. Step 5: Solve for x
    x = 360,423,642,601.15/543,630.96
  6. Step 6: Final answer
    x = 662,993.22

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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.