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Finding the Fourth Proportional to 628,024.84, 866,228.64 and 385,989.64

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Solution

The fourth proportional to 628,024.84, 866,228.64 and 385,989.64 is: 532,391.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,024.84 : 866,228.64 = 385,989.64 : x
  2. Step 2: Convert to fraction form
    628,024.84/866,228.64 = 385,989.64/x
  3. Step 3: Cross multiply
    628,024.84x = 866,228.64 × 385,989.64
  4. Step 4: Simplify right side
    628,024.84x = 334,355,280,911.29
  5. Step 5: Solve for x
    x = 334,355,280,911.29/628,024.84
  6. Step 6: Final answer
    x = 532,391.81

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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.