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Finding the Fourth Proportional to 1,198,810.54, 1,789,470.95 and 1,047,472.84

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Solution

The fourth proportional to 1,198,810.54, 1,789,470.95 and 1,047,472.84 is: 1,563,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,810.54 : 1,789,470.95 = 1,047,472.84 : x
  2. Step 2: Convert to fraction form
    1,198,810.54/1,789,470.95 = 1,047,472.84/x
  3. Step 3: Cross multiply
    1,198,810.54x = 1,789,470.95 × 1,047,472.84
  4. Step 4: Simplify right side
    1,198,810.54x = 1,874,422,218,094.00
  5. Step 5: Solve for x
    x = 1,874,422,218,094.00/1,198,810.54
  6. Step 6: Final answer
    x = 1,563,568.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.