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Finding the Fourth Proportional to 1,948,607.54, 2,689,135.06 and 1,065,608.60

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Solution

The fourth proportional to 1,948,607.54, 2,689,135.06 and 1,065,608.60 is: 1,470,570.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948,607.54 : 2,689,135.06 = 1,065,608.60 : x
  2. Step 2: Convert to fraction form
    1,948,607.54/2,689,135.06 = 1,065,608.60/x
  3. Step 3: Cross multiply
    1,948,607.54x = 2,689,135.06 × 1,065,608.60
  4. Step 4: Simplify right side
    1,948,607.54x = 2,865,565,446,497.52
  5. Step 5: Solve for x
    x = 2,865,565,446,497.52/1,948,607.54
  6. Step 6: Final answer
    x = 1,470,570.85

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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.