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Finding the Fourth Proportional to 529,019.66, 730,270.50 and 357,170.42

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Solution

The fourth proportional to 529,019.66, 730,270.50 and 357,170.42 is: 493,045.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,019.66 : 730,270.50 = 357,170.42 : x
  2. Step 2: Convert to fraction form
    529,019.66/730,270.50 = 357,170.42/x
  3. Step 3: Cross multiply
    529,019.66x = 730,270.50 × 357,170.42
  4. Step 4: Simplify right side
    529,019.66x = 260,831,021,198.61
  5. Step 5: Solve for x
    x = 260,831,021,198.61/529,019.66
  6. Step 6: Final answer
    x = 493,045.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.