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Finding the Fourth Proportional to 316,907.64, 437,343.18 and 173,666.43

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Solution

The fourth proportional to 316,907.64, 437,343.18 and 173,666.43 is: 239,665.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,907.64 : 437,343.18 = 173,666.43 : x
  2. Step 2: Convert to fraction form
    316,907.64/437,343.18 = 173,666.43/x
  3. Step 3: Cross multiply
    316,907.64x = 437,343.18 × 173,666.43
  4. Step 4: Simplify right side
    316,907.64x = 75,951,828,755.45
  5. Step 5: Solve for x
    x = 75,951,828,755.45/316,907.64
  6. Step 6: Final answer
    x = 239,665.50

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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.