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Finding the Fourth Proportional to 105,392.41, 158,150.85 and 38,878.99

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Solution

The fourth proportional to 105,392.41, 158,150.85 and 38,878.99 is: 58,341.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.41 : 158,150.85 = 38,878.99 : x
  2. Step 2: Convert to fraction form
    105,392.41/158,150.85 = 38,878.99/x
  3. Step 3: Cross multiply
    105,392.41x = 158,150.85 × 38,878.99
  4. Step 4: Simplify right side
    105,392.41x = 6,148,745,315.64
  5. Step 5: Solve for x
    x = 6,148,745,315.64/105,392.41
  6. Step 6: Final answer
    x = 58,341.44

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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.