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Finding the Fourth Proportional to 472,694.44, 709,041.30 and 140,270.44

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Solution

The fourth proportional to 472,694.44, 709,041.30 and 140,270.44 is: 210,405.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,694.44 : 709,041.30 = 140,270.44 : x
  2. Step 2: Convert to fraction form
    472,694.44/709,041.30 = 140,270.44/x
  3. Step 3: Cross multiply
    472,694.44x = 709,041.30 × 140,270.44
  4. Step 4: Simplify right side
    472,694.44x = 99,457,535,129.17
  5. Step 5: Solve for x
    x = 99,457,535,129.17/472,694.44
  6. Step 6: Final answer
    x = 210,405.55

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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.