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Finding the Fourth Proportional to 113,689.84, 170,535.08 and 39,800.56

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Solution

The fourth proportional to 113,689.84, 170,535.08 and 39,800.56 is: 59,700.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,689.84 : 170,535.08 = 39,800.56 : x
  2. Step 2: Convert to fraction form
    113,689.84/170,535.08 = 39,800.56/x
  3. Step 3: Cross multiply
    113,689.84x = 170,535.08 × 39,800.56
  4. Step 4: Simplify right side
    113,689.84x = 6,787,391,683.64
  5. Step 5: Solve for x
    x = 6,787,391,683.64/113,689.84
  6. Step 6: Final answer
    x = 59,700.95

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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.