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Finding the Fourth Proportional to 527,453.01, 727,885.50 and 285,736.55

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Solution

The fourth proportional to 527,453.01, 727,885.50 and 285,736.55 is: 394,316.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,453.01 : 727,885.50 = 285,736.55 : x
  2. Step 2: Convert to fraction form
    527,453.01/727,885.50 = 285,736.55/x
  3. Step 3: Cross multiply
    527,453.01x = 727,885.50 × 285,736.55
  4. Step 4: Simplify right side
    527,453.01x = 207,983,487,925.60
  5. Step 5: Solve for x
    x = 207,983,487,925.60/527,453.01
  6. Step 6: Final answer
    x = 394,316.62

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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.