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Finding the Fourth Proportional to 717,059.69, 989,504.81 and 394,706.82

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Solution

The fourth proportional to 717,059.69, 989,504.81 and 394,706.82 is: 544,674.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,059.69 : 989,504.81 = 394,706.82 : x
  2. Step 2: Convert to fraction form
    717,059.69/989,504.81 = 394,706.82/x
  3. Step 3: Cross multiply
    717,059.69x = 989,504.81 × 394,706.82
  4. Step 4: Simplify right side
    717,059.69x = 390,564,300,147.06
  5. Step 5: Solve for x
    x = 390,564,300,147.06/717,059.69
  6. Step 6: Final answer
    x = 544,674.74

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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.