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Finding the Fourth Proportional to 922,392.60, 1,272,846.96 and 535,178.03

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Solution

The fourth proportional to 922,392.60, 1,272,846.96 and 535,178.03 is: 738,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,392.60 : 1,272,846.96 = 535,178.03 : x
  2. Step 2: Convert to fraction form
    922,392.60/1,272,846.96 = 535,178.03/x
  3. Step 3: Cross multiply
    922,392.60x = 1,272,846.96 × 535,178.03
  4. Step 4: Simplify right side
    922,392.60x = 681,199,728,544.29
  5. Step 5: Solve for x
    x = 681,199,728,544.29/922,392.60
  6. Step 6: Final answer
    x = 738,513.87

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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.