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Finding the Fourth Proportional to 113,355.70, 170,033.55 and 103,246.90

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Solution

The fourth proportional to 113,355.70, 170,033.55 and 103,246.90 is: 154,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,355.70 : 170,033.55 = 103,246.90 : x
  2. Step 2: Convert to fraction form
    113,355.70/170,033.55 = 103,246.90/x
  3. Step 3: Cross multiply
    113,355.70x = 170,033.55 × 103,246.90
  4. Step 4: Simplify right side
    113,355.70x = 17,555,436,933.50
  5. Step 5: Solve for x
    x = 17,555,436,933.50/113,355.70
  6. Step 6: Final answer
    x = 154,870.35

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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.