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Finding the Fourth Proportional to 253,292.51, 379,562.78 and 140,818.01

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Solution

The fourth proportional to 253,292.51, 379,562.78 and 140,818.01 is: 211,017.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,292.51 : 379,562.78 = 140,818.01 : x
  2. Step 2: Convert to fraction form
    253,292.51/379,562.78 = 140,818.01/x
  3. Step 3: Cross multiply
    253,292.51x = 379,562.78 × 140,818.01
  4. Step 4: Simplify right side
    253,292.51x = 53,449,272,747.76
  5. Step 5: Solve for x
    x = 53,449,272,747.76/253,292.51
  6. Step 6: Final answer
    x = 211,017.98

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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.