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Finding the Fourth Proportional to 623,910.60, 861,102.50 and 352,055.57

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Solution

The fourth proportional to 623,910.60, 861,102.50 and 352,055.57 is: 485,896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,910.60 : 861,102.50 = 352,055.57 : x
  2. Step 2: Convert to fraction form
    623,910.60/861,102.50 = 352,055.57/x
  3. Step 3: Cross multiply
    623,910.60x = 861,102.50 × 352,055.57
  4. Step 4: Simplify right side
    623,910.60x = 303,155,925,400.14
  5. Step 5: Solve for x
    x = 303,155,925,400.14/623,910.60
  6. Step 6: Final answer
    x = 485,896.42

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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.