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Finding the Fourth Proportional to 922,930.55, 1,273,644.21 and 509,467.44

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Solution

The fourth proportional to 922,930.55, 1,273,644.21 and 509,467.44 is: 703,065.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,930.55 : 1,273,644.21 = 509,467.44 : x
  2. Step 2: Convert to fraction form
    922,930.55/1,273,644.21 = 509,467.44/x
  3. Step 3: Cross multiply
    922,930.55x = 1,273,644.21 × 509,467.44
  4. Step 4: Simplify right side
    922,930.55x = 648,880,255,139.52
  5. Step 5: Solve for x
    x = 648,880,255,139.52/922,930.55
  6. Step 6: Final answer
    x = 703,065.10

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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.