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Finding the Fourth Proportional to 717,951.74, 990,820.05 and 412,127.12

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Solution

The fourth proportional to 717,951.74, 990,820.05 and 412,127.12 is: 568,762.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,951.74 : 990,820.05 = 412,127.12 : x
  2. Step 2: Convert to fraction form
    717,951.74/990,820.05 = 412,127.12/x
  3. Step 3: Cross multiply
    717,951.74x = 990,820.05 × 412,127.12
  4. Step 4: Simplify right side
    717,951.74x = 408,343,814,576.33
  5. Step 5: Solve for x
    x = 408,343,814,576.33/717,951.74
  6. Step 6: Final answer
    x = 568,762.21

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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.