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Finding the Fourth Proportional to 562,850.19, 776,725.56 and 308,201.40

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Solution

The fourth proportional to 562,850.19, 776,725.56 and 308,201.40 is: 425,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,850.19 : 776,725.56 = 308,201.40 : x
  2. Step 2: Convert to fraction form
    562,850.19/776,725.56 = 308,201.40/x
  3. Step 3: Cross multiply
    562,850.19x = 776,725.56 × 308,201.40
  4. Step 4: Simplify right side
    562,850.19x = 239,387,905,007.78
  5. Step 5: Solve for x
    x = 239,387,905,007.78/562,850.19
  6. Step 6: Final answer
    x = 425,313.71

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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.