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Finding the Fourth Proportional to 683,316.90, 942,854.22 and 392,860.52

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Solution

The fourth proportional to 683,316.90, 942,854.22 and 392,860.52 is: 542,076.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,316.90 : 942,854.22 = 392,860.52 : x
  2. Step 2: Convert to fraction form
    683,316.90/942,854.22 = 392,860.52/x
  3. Step 3: Cross multiply
    683,316.90x = 942,854.22 × 392,860.52
  4. Step 4: Simplify right side
    683,316.90x = 370,410,194,439.12
  5. Step 5: Solve for x
    x = 370,410,194,439.12/683,316.90
  6. Step 6: Final answer
    x = 542,076.74

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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.