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Finding the Fourth Proportional to 619,116.55, 928,521.03 and 349,363.11

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Solution

The fourth proportional to 619,116.55, 928,521.03 and 349,363.11 is: 523,957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,116.55 : 928,521.03 = 349,363.11 : x
  2. Step 2: Convert to fraction form
    619,116.55/928,521.03 = 349,363.11/x
  3. Step 3: Cross multiply
    619,116.55x = 928,521.03 × 349,363.11
  4. Step 4: Simplify right side
    619,116.55x = 324,390,994,741.20
  5. Step 5: Solve for x
    x = 324,390,994,741.20/619,116.55
  6. Step 6: Final answer
    x = 523,957.88

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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.