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Finding the Fourth Proportional to 527,359.16, 791,043.74 and 128,003.54

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Solution

The fourth proportional to 527,359.16, 791,043.74 and 128,003.54 is: 192,006.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,359.16 : 791,043.74 = 128,003.54 : x
  2. Step 2: Convert to fraction form
    527,359.16/791,043.74 = 128,003.54/x
  3. Step 3: Cross multiply
    527,359.16x = 791,043.74 × 128,003.54
  4. Step 4: Simplify right side
    527,359.16x = 101,256,399,014.84
  5. Step 5: Solve for x
    x = 101,256,399,014.84/527,359.16
  6. Step 6: Final answer
    x = 192,006.52

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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.