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Finding the Fourth Proportional to 316,641.15, 474,986.33 and 92,004.81

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Solution

The fourth proportional to 316,641.15, 474,986.33 and 92,004.81 is: 138,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,641.15 : 474,986.33 = 92,004.81 : x
  2. Step 2: Convert to fraction form
    316,641.15/474,986.33 = 92,004.81/x
  3. Step 3: Cross multiply
    316,641.15x = 474,986.33 × 92,004.81
  4. Step 4: Simplify right side
    316,641.15x = 43,701,027,819.84
  5. Step 5: Solve for x
    x = 43,701,027,819.84/316,641.15
  6. Step 6: Final answer
    x = 138,014.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.