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Finding the Fourth Proportional to 527,978.89, 791,618.50 and 190,975.20

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Solution

The fourth proportional to 527,978.89, 791,618.50 and 190,975.20 is: 286,336.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,978.89 : 791,618.50 = 190,975.20 : x
  2. Step 2: Convert to fraction form
    527,978.89/791,618.50 = 190,975.20/x
  3. Step 3: Cross multiply
    527,978.89x = 791,618.50 × 190,975.20
  4. Step 4: Simplify right side
    527,978.89x = 151,179,501,361.20
  5. Step 5: Solve for x
    x = 151,179,501,361.20/527,978.89
  6. Step 6: Final answer
    x = 286,336.26

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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.