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Finding the Fourth Proportional to 3,948,810.21, 5,923,215.27 and 956,994.21

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Solution

The fourth proportional to 3,948,810.21, 5,923,215.27 and 956,994.21 is: 1,435,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948,810.21 : 5,923,215.27 = 956,994.21 : x
  2. Step 2: Convert to fraction form
    3,948,810.21/5,923,215.27 = 956,994.21/x
  3. Step 3: Cross multiply
    3,948,810.21x = 5,923,215.27 × 956,994.21
  4. Step 4: Simplify right side
    3,948,810.21x = 5,668,482,717,973.59
  5. Step 5: Solve for x
    x = 5,668,482,717,973.59/3,948,810.21
  6. Step 6: Final answer
    x = 1,435,491.30

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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.