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Finding the Fourth Proportional to 527,754.63, 791,632.52 and 128,395.40

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Solution

The fourth proportional to 527,754.63, 791,632.52 and 128,395.40 is: 192,593.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,754.63 : 791,632.52 = 128,395.40 : x
  2. Step 2: Convert to fraction form
    527,754.63/791,632.52 = 128,395.40/x
  3. Step 3: Cross multiply
    527,754.63x = 791,632.52 × 128,395.40
  4. Step 4: Simplify right side
    527,754.63x = 101,641,969,458.27
  5. Step 5: Solve for x
    x = 101,641,969,458.27/527,754.63
  6. Step 6: Final answer
    x = 192,593.23

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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.