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Finding the Fourth Proportional to 352,158.75, 528,315.89 and 130,542.75

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Solution

The fourth proportional to 352,158.75, 528,315.89 and 130,542.75 is: 195,842.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,158.75 : 528,315.89 = 130,542.75 : x
  2. Step 2: Convert to fraction form
    352,158.75/528,315.89 = 130,542.75/x
  3. Step 3: Cross multiply
    352,158.75x = 528,315.89 × 130,542.75
  4. Step 4: Simplify right side
    352,158.75x = 68,967,808,496.58
  5. Step 5: Solve for x
    x = 68,967,808,496.58/352,158.75
  6. Step 6: Final answer
    x = 195,842.95

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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.