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Finding the Fourth Proportional to 548,929.76, 757,602.62 and 316,311.44

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Solution

The fourth proportional to 548,929.76, 757,602.62 and 316,311.44 is: 436,555.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,929.76 : 757,602.62 = 316,311.44 : x
  2. Step 2: Convert to fraction form
    548,929.76/757,602.62 = 316,311.44/x
  3. Step 3: Cross multiply
    548,929.76x = 757,602.62 × 316,311.44
  4. Step 4: Simplify right side
    548,929.76x = 239,638,377,537.34
  5. Step 5: Solve for x
    x = 239,638,377,537.34/548,929.76
  6. Step 6: Final answer
    x = 436,555.63

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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.