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Finding the Fourth Proportional to 616,107.80, 923,762.10 and 261,025.40

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Solution

The fourth proportional to 616,107.80, 923,762.10 and 261,025.40 is: 391,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,107.80 : 923,762.10 = 261,025.40 : x
  2. Step 2: Convert to fraction form
    616,107.80/923,762.10 = 261,025.40/x
  3. Step 3: Cross multiply
    616,107.80x = 923,762.10 × 261,025.40
  4. Step 4: Simplify right side
    616,107.80x = 241,125,371,657.34
  5. Step 5: Solve for x
    x = 241,125,371,657.34/616,107.80
  6. Step 6: Final answer
    x = 391,368.80

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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.