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Finding the Fourth Proportional to 527,325.72, 790,982.64 and 127,970.88

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Solution

The fourth proportional to 527,325.72, 790,982.64 and 127,970.88 is: 191,954.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,325.72 : 790,982.64 = 127,970.88 : x
  2. Step 2: Convert to fraction form
    527,325.72/790,982.64 = 127,970.88/x
  3. Step 3: Cross multiply
    527,325.72x = 790,982.64 × 127,970.88
  4. Step 4: Simplify right side
    527,325.72x = 101,222,744,505.52
  5. Step 5: Solve for x
    x = 101,222,744,505.52/527,325.72
  6. Step 6: Final answer
    x = 191,954.88

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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.