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Finding the Fourth Proportional to 352,657.85, 529,050.34 and 128,333.16

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Solution

The fourth proportional to 352,657.85, 529,050.34 and 128,333.16 is: 192,522.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,657.85 : 529,050.34 = 128,333.16 : x
  2. Step 2: Convert to fraction form
    352,657.85/529,050.34 = 128,333.16/x
  3. Step 3: Cross multiply
    352,657.85x = 529,050.34 × 128,333.16
  4. Step 4: Simplify right side
    352,657.85x = 67,894,701,369.82
  5. Step 5: Solve for x
    x = 67,894,701,369.82/352,657.85
  6. Step 6: Final answer
    x = 192,522.87

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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.