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Finding the Fourth Proportional to 493,529.30, 740,639.55 and 316,466.90

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Solution

The fourth proportional to 493,529.30, 740,639.55 and 316,466.90 is: 474,921.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,529.30 : 740,639.55 = 316,466.90 : x
  2. Step 2: Convert to fraction form
    493,529.30/740,639.55 = 316,466.90/x
  3. Step 3: Cross multiply
    493,529.30x = 740,639.55 × 316,466.90
  4. Step 4: Simplify right side
    493,529.30x = 234,387,902,405.90
  5. Step 5: Solve for x
    x = 234,387,902,405.90/493,529.30
  6. Step 6: Final answer
    x = 474,921.96

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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.