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Finding the Fourth Proportional to 619,929.62, 929,007.16 and 353,138.90

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Solution

The fourth proportional to 619,929.62, 929,007.16 and 353,138.90 is: 529,202.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,929.62 : 929,007.16 = 353,138.90 : x
  2. Step 2: Convert to fraction form
    619,929.62/929,007.16 = 353,138.90/x
  3. Step 3: Cross multiply
    619,929.62x = 929,007.16 × 353,138.90
  4. Step 4: Simplify right side
    619,929.62x = 328,068,566,574.52
  5. Step 5: Solve for x
    x = 328,068,566,574.52/619,929.62
  6. Step 6: Final answer
    x = 529,202.92

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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.