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Finding the Fourth Proportional to 319,043.60, 478,574.68 and 119,325.88

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Solution

The fourth proportional to 319,043.60, 478,574.68 and 119,325.88 is: 178,992.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,043.60 : 478,574.68 = 119,325.88 : x
  2. Step 2: Convert to fraction form
    319,043.60/478,574.68 = 119,325.88/x
  3. Step 3: Cross multiply
    319,043.60x = 478,574.68 × 119,325.88
  4. Step 4: Simplify right side
    319,043.60x = 57,106,344,836.72
  5. Step 5: Solve for x
    x = 57,106,344,836.72/319,043.60
  6. Step 6: Final answer
    x = 178,992.29

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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.