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Finding the Fourth Proportional to 529,494.05, 730,706.59 and 287,777.20

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Solution

The fourth proportional to 529,494.05, 730,706.59 and 287,777.20 is: 397,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,494.05 : 730,706.59 = 287,777.20 : x
  2. Step 2: Convert to fraction form
    529,494.05/730,706.59 = 287,777.20/x
  3. Step 3: Cross multiply
    529,494.05x = 730,706.59 × 287,777.20
  4. Step 4: Simplify right side
    529,494.05x = 210,280,696,491.75
  5. Step 5: Solve for x
    x = 210,280,696,491.75/529,494.05
  6. Step 6: Final answer
    x = 397,135.15

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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.