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Finding the Fourth Proportional to 70,435.71, 105,619.07 and 34,855.95

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Solution

The fourth proportional to 70,435.71, 105,619.07 and 34,855.95 is: 52,266.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,435.71 : 105,619.07 = 34,855.95 : x
  2. Step 2: Convert to fraction form
    70,435.71/105,619.07 = 34,855.95/x
  3. Step 3: Cross multiply
    70,435.71x = 105,619.07 × 34,855.95
  4. Step 4: Simplify right side
    70,435.71x = 3,681,453,506.18
  5. Step 5: Solve for x
    x = 3,681,453,506.18/70,435.71
  6. Step 6: Final answer
    x = 52,266.86

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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.