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Finding the Fourth Proportional to 1,198,719.81, 1,654,206.03 and 654,858

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Solution

The fourth proportional to 1,198,719.81, 1,654,206.03 and 654,858 is: 903,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,719.81 : 1,654,206.03 = 654,858 : x
  2. Step 2: Convert to fraction form
    1,198,719.81/1,654,206.03 = 654,858/x
  3. Step 3: Cross multiply
    1,198,719.81x = 1,654,206.03 × 654,858
  4. Step 4: Simplify right side
    1,198,719.81x = 1,083,270,052,393.74
  5. Step 5: Solve for x
    x = 1,083,270,052,393.74/1,198,719.81
  6. Step 6: Final answer
    x = 903,689.12

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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.