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Finding the Fourth Proportional to 403,541.61, 556,846.21 and 248,468.28

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Solution

The fourth proportional to 403,541.61, 556,846.21 and 248,468.28 is: 342,860.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,541.61 : 556,846.21 = 248,468.28 : x
  2. Step 2: Convert to fraction form
    403,541.61/556,846.21 = 248,468.28/x
  3. Step 3: Cross multiply
    403,541.61x = 556,846.21 × 248,468.28
  4. Step 4: Simplify right side
    403,541.61x = 138,358,620,023.22
  5. Step 5: Solve for x
    x = 138,358,620,023.22/403,541.61
  6. Step 6: Final answer
    x = 342,860.85

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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.