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Finding the Fourth Proportional to 1,315,584.19, 1,815,506.17 and 711,972.19

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Solution

The fourth proportional to 1,315,584.19, 1,815,506.17 and 711,972.19 is: 982,521.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,584.19 : 1,815,506.17 = 711,972.19 : x
  2. Step 2: Convert to fraction form
    1,315,584.19/1,815,506.17 = 711,972.19/x
  3. Step 3: Cross multiply
    1,315,584.19x = 1,815,506.17 × 711,972.19
  4. Step 4: Simplify right side
    1,315,584.19x = 1,292,589,900,253.55
  5. Step 5: Solve for x
    x = 1,292,589,900,253.55/1,315,584.19
  6. Step 6: Final answer
    x = 982,521.61

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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.