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Finding the Fourth Proportional to 616,927.80, 925,737.30 and 261,881.40

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Solution

The fourth proportional to 616,927.80, 925,737.30 and 261,881.40 is: 392,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,927.80 : 925,737.30 = 261,881.40 : x
  2. Step 2: Convert to fraction form
    616,927.80/925,737.30 = 261,881.40/x
  3. Step 3: Cross multiply
    616,927.80x = 925,737.30 × 261,881.40
  4. Step 4: Simplify right side
    616,927.80x = 242,433,380,156.22
  5. Step 5: Solve for x
    x = 242,433,380,156.22/616,927.80
  6. Step 6: Final answer
    x = 392,968.80

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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.