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Finding the Fourth Proportional to 70,237.56, 105,366.82 and 25,860.90

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Solution

The fourth proportional to 70,237.56, 105,366.82 and 25,860.90 is: 38,795.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,237.56 : 105,366.82 = 25,860.90 : x
  2. Step 2: Convert to fraction form
    70,237.56/105,366.82 = 25,860.90/x
  3. Step 3: Cross multiply
    70,237.56x = 105,366.82 × 25,860.90
  4. Step 4: Simplify right side
    70,237.56x = 2,724,880,795.34
  5. Step 5: Solve for x
    x = 2,724,880,795.34/70,237.56
  6. Step 6: Final answer
    x = 38,795.21

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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.