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Finding the Fourth Proportional to 352,043.80, 528,065.70 and 115,410.40

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Solution

The fourth proportional to 352,043.80, 528,065.70 and 115,410.40 is: 173,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,043.80 : 528,065.70 = 115,410.40 : x
  2. Step 2: Convert to fraction form
    352,043.80/528,065.70 = 115,410.40/x
  3. Step 3: Cross multiply
    352,043.80x = 528,065.70 × 115,410.40
  4. Step 4: Simplify right side
    352,043.80x = 60,944,273,663.28
  5. Step 5: Solve for x
    x = 60,944,273,663.28/352,043.80
  6. Step 6: Final answer
    x = 173,115.60

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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.