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Finding the Fourth Proportional to 316,695.76, 437,040.32 and 173,464.88

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Solution

The fourth proportional to 316,695.76, 437,040.32 and 173,464.88 is: 239,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,695.76 : 437,040.32 = 173,464.88 : x
  2. Step 2: Convert to fraction form
    316,695.76/437,040.32 = 173,464.88/x
  3. Step 3: Cross multiply
    316,695.76x = 437,040.32 × 173,464.88
  4. Step 4: Simplify right side
    316,695.76x = 75,811,146,663.96
  5. Step 5: Solve for x
    x = 75,811,146,663.96/316,695.76
  6. Step 6: Final answer
    x = 239,381.63

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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.