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Finding the Fourth Proportional to 352,061.20, 528,091.80 and 141,590.80

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Solution

The fourth proportional to 352,061.20, 528,091.80 and 141,590.80 is: 212,386.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,061.20 : 528,091.80 = 141,590.80 : x
  2. Step 2: Convert to fraction form
    352,061.20/528,091.80 = 141,590.80/x
  3. Step 3: Cross multiply
    352,061.20x = 528,091.80 × 141,590.80
  4. Step 4: Simplify right side
    352,061.20x = 74,772,940,435.44
  5. Step 5: Solve for x
    x = 74,772,940,435.44/352,061.20
  6. Step 6: Final answer
    x = 212,386.20

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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.