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Finding the Fourth Proportional to 369,663.47, 554,690.56 and 262,286.77

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Solution

The fourth proportional to 369,663.47, 554,690.56 and 262,286.77 is: 393,568.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,663.47 : 554,690.56 = 262,286.77 : x
  2. Step 2: Convert to fraction form
    369,663.47/554,690.56 = 262,286.77/x
  3. Step 3: Cross multiply
    369,663.47x = 554,690.56 × 262,286.77
  4. Step 4: Simplify right side
    369,663.47x = 145,487,991,247.01
  5. Step 5: Solve for x
    x = 145,487,991,247.01/369,663.47
  6. Step 6: Final answer
    x = 393,568.76

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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.