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Finding the Fourth Proportional to 1,938,355.76, 2,907,865.80 and 658,827.92

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Solution

The fourth proportional to 1,938,355.76, 2,907,865.80 and 658,827.92 is: 988,354.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938,355.76 : 2,907,865.80 = 658,827.92 : x
  2. Step 2: Convert to fraction form
    1,938,355.76/2,907,865.80 = 658,827.92/x
  3. Step 3: Cross multiply
    1,938,355.76x = 2,907,865.80 × 658,827.92
  4. Step 4: Simplify right side
    1,938,355.76x = 1,915,783,176,653.14
  5. Step 5: Solve for x
    x = 1,915,783,176,653.14/1,938,355.76
  6. Step 6: Final answer
    x = 988,354.78

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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.