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Finding the Fourth Proportional to 620,335.76, 929,842.06 and 353,521.76

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Solution

The fourth proportional to 620,335.76, 929,842.06 and 353,521.76 is: 529,905.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,335.76 : 929,842.06 = 353,521.76 : x
  2. Step 2: Convert to fraction form
    620,335.76/929,842.06 = 353,521.76/x
  3. Step 3: Cross multiply
    620,335.76x = 929,842.06 × 353,521.76
  4. Step 4: Simplify right side
    620,335.76x = 328,719,401,573.23
  5. Step 5: Solve for x
    x = 328,719,401,573.23/620,335.76
  6. Step 6: Final answer
    x = 529,905.61

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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.