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Finding the Fourth Proportional to 713,852.78, 985,099.07 and 407,909.75

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Solution

The fourth proportional to 713,852.78, 985,099.07 and 407,909.75 is: 562,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,852.78 : 985,099.07 = 407,909.75 : x
  2. Step 2: Convert to fraction form
    713,852.78/985,099.07 = 407,909.75/x
  3. Step 3: Cross multiply
    713,852.78x = 985,099.07 × 407,909.75
  4. Step 4: Simplify right side
    713,852.78x = 401,831,511,463.21
  5. Step 5: Solve for x
    x = 401,831,511,463.21/713,852.78
  6. Step 6: Final answer
    x = 562,905.30

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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.