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Finding the Fourth Proportional to 685,259.84, 945,647.14 and 379,329.76

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Solution

The fourth proportional to 685,259.84, 945,647.14 and 379,329.76 is: 523,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,259.84 : 945,647.14 = 379,329.76 : x
  2. Step 2: Convert to fraction form
    685,259.84/945,647.14 = 379,329.76/x
  3. Step 3: Cross multiply
    685,259.84x = 945,647.14 × 379,329.76
  4. Step 4: Simplify right side
    685,259.84x = 358,712,102,660.89
  5. Step 5: Solve for x
    x = 358,712,102,660.89/685,259.84
  6. Step 6: Final answer
    x = 523,468.74

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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.