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Finding the Fourth Proportional to 352,693.40, 529,040.10 and 103,375.40

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Solution

The fourth proportional to 352,693.40, 529,040.10 and 103,375.40 is: 155,063.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,693.40 : 529,040.10 = 103,375.40 : x
  2. Step 2: Convert to fraction form
    352,693.40/529,040.10 = 103,375.40/x
  3. Step 3: Cross multiply
    352,693.40x = 529,040.10 × 103,375.40
  4. Step 4: Simplify right side
    352,693.40x = 54,689,731,953.54
  5. Step 5: Solve for x
    x = 54,689,731,953.54/352,693.40
  6. Step 6: Final answer
    x = 155,063.10

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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.