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Finding the Fourth Proportional to 533,865.48, 736,661.52 and 318,959.88

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Solution

The fourth proportional to 533,865.48, 736,661.52 and 318,959.88 is: 440,121.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    533,865.48 : 736,661.52 = 318,959.88 : x
  2. Step 2: Convert to fraction form
    533,865.48/736,661.52 = 318,959.88/x
  3. Step 3: Cross multiply
    533,865.48x = 736,661.52 × 318,959.88
  4. Step 4: Simplify right side
    533,865.48x = 234,965,470,019.82
  5. Step 5: Solve for x
    x = 234,965,470,019.82/533,865.48
  6. Step 6: Final answer
    x = 440,121.11

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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.