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Finding the Fourth Proportional to 316,895.72, 475,421.31 and 92,258.15

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Solution

The fourth proportional to 316,895.72, 475,421.31 and 92,258.15 is: 138,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,895.72 : 475,421.31 = 92,258.15 : x
  2. Step 2: Convert to fraction form
    316,895.72/475,421.31 = 92,258.15/x
  3. Step 3: Cross multiply
    316,895.72x = 475,421.31 × 92,258.15
  4. Step 4: Simplify right side
    316,895.72x = 43,861,488,154.07
  5. Step 5: Solve for x
    x = 43,861,488,154.07/316,895.72
  6. Step 6: Final answer
    x = 138,409.85

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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.