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Finding the Fourth Proportional to 352,607.20, 529,429.20 and 247,890.40

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Solution

The fourth proportional to 352,607.20, 529,429.20 and 247,890.40 is: 372,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,607.20 : 529,429.20 = 247,890.40 : x
  2. Step 2: Convert to fraction form
    352,607.20/529,429.20 = 247,890.40/x
  3. Step 3: Cross multiply
    352,607.20x = 529,429.20 × 247,890.40
  4. Step 4: Simplify right side
    352,607.20x = 131,240,416,159.68
  5. Step 5: Solve for x
    x = 131,240,416,159.68/352,607.20
  6. Step 6: Final answer
    x = 372,200.05

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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.