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Finding the Fourth Proportional to 717,205.54, 989,724.26 and 411,333.34

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Solution

The fourth proportional to 717,205.54, 989,724.26 and 411,333.34 is: 567,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,205.54 : 989,724.26 = 411,333.34 : x
  2. Step 2: Convert to fraction form
    717,205.54/989,724.26 = 411,333.34/x
  3. Step 3: Cross multiply
    717,205.54x = 989,724.26 × 411,333.34
  4. Step 4: Simplify right side
    717,205.54x = 407,106,585,544.83
  5. Step 5: Solve for x
    x = 407,106,585,544.83/717,205.54
  6. Step 6: Final answer
    x = 567,628.89

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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.