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Finding the Fourth Proportional to 417,130.63, 620,329.95 and 403,844.47

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Solution

The fourth proportional to 417,130.63, 620,329.95 and 403,844.47 is: 600,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,130.63 : 620,329.95 = 403,844.47 : x
  2. Step 2: Convert to fraction form
    417,130.63/620,329.95 = 403,844.47/x
  3. Step 3: Cross multiply
    417,130.63x = 620,329.95 × 403,844.47
  4. Step 4: Simplify right side
    417,130.63x = 250,516,815,771.62
  5. Step 5: Solve for x
    x = 250,516,815,771.62/417,130.63
  6. Step 6: Final answer
    x = 600,571.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.