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Finding the Fourth Proportional to 352,038.40, 528,057.60 and 115,388.80

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Solution

The fourth proportional to 352,038.40, 528,057.60 and 115,388.80 is: 173,083.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,038.40 : 528,057.60 = 115,388.80 : x
  2. Step 2: Convert to fraction form
    352,038.40/528,057.60 = 115,388.80/x
  3. Step 3: Cross multiply
    352,038.40x = 528,057.60 × 115,388.80
  4. Step 4: Simplify right side
    352,038.40x = 60,931,932,794.88
  5. Step 5: Solve for x
    x = 60,931,932,794.88/352,038.40
  6. Step 6: Final answer
    x = 173,083.20

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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.