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Finding the Fourth Proportional to 352,535.20, 528,802.80 and 115,820.80

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Solution

The fourth proportional to 352,535.20, 528,802.80 and 115,820.80 is: 173,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,535.20 : 528,802.80 = 115,820.80 : x
  2. Step 2: Convert to fraction form
    352,535.20/528,802.80 = 115,820.80/x
  3. Step 3: Cross multiply
    352,535.20x = 528,802.80 × 115,820.80
  4. Step 4: Simplify right side
    352,535.20x = 61,246,363,338.24
  5. Step 5: Solve for x
    x = 61,246,363,338.24/352,535.20
  6. Step 6: Final answer
    x = 173,731.20

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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.