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Finding the Fourth Proportional to 1,834,728.80, 2,752,093.20 and 1,663,486.70

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Solution

The fourth proportional to 1,834,728.80, 2,752,093.20 and 1,663,486.70 is: 2,495,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,834,728.80 : 2,752,093.20 = 1,663,486.70 : x
  2. Step 2: Convert to fraction form
    1,834,728.80/2,752,093.20 = 1,663,486.70/x
  3. Step 3: Cross multiply
    1,834,728.80x = 2,752,093.20 × 1,663,486.70
  4. Step 4: Simplify right side
    1,834,728.80x = 4,578,070,435,360.44
  5. Step 5: Solve for x
    x = 4,578,070,435,360.44/1,834,728.80
  6. Step 6: Final answer
    x = 2,495,230.05

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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.