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Finding the Fourth Proportional to 1,408,617.81, 1,942,352.01 and 1,046,713.05

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Solution

The fourth proportional to 1,408,617.81, 1,942,352.01 and 1,046,713.05 is: 1,443,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408,617.81 : 1,942,352.01 = 1,046,713.05 : x
  2. Step 2: Convert to fraction form
    1,408,617.81/1,942,352.01 = 1,046,713.05/x
  3. Step 3: Cross multiply
    1,408,617.81x = 1,942,352.01 × 1,046,713.05
  4. Step 4: Simplify right side
    1,408,617.81x = 2,033,085,196,560.73
  5. Step 5: Solve for x
    x = 2,033,085,196,560.73/1,408,617.81
  6. Step 6: Final answer
    x = 1,443,319.25

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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.