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Finding the Fourth Proportional to 292,381.20, 439,738.20 and 262,054.80

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Solution

The fourth proportional to 292,381.20, 439,738.20 and 262,054.80 is: 394,127.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,381.20 : 439,738.20 = 262,054.80 : x
  2. Step 2: Convert to fraction form
    292,381.20/439,738.20 = 262,054.80/x
  3. Step 3: Cross multiply
    292,381.20x = 439,738.20 × 262,054.80
  4. Step 4: Simplify right side
    292,381.20x = 115,235,506,053.36
  5. Step 5: Solve for x
    x = 115,235,506,053.36/292,381.20
  6. Step 6: Final answer
    x = 394,127.62

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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.