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Finding the Fourth Proportional to 251,040, 346,465.92 and 145,056

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Solution

The fourth proportional to 251,040, 346,465.92 and 145,056 is: 200,195.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,040 : 346,465.92 = 145,056 : x
  2. Step 2: Convert to fraction form
    251,040/346,465.92 = 145,056/x
  3. Step 3: Cross multiply
    251,040x = 346,465.92 × 145,056
  4. Step 4: Simplify right side
    251,040x = 50,256,960,491.52
  5. Step 5: Solve for x
    x = 50,256,960,491.52/251,040
  6. Step 6: Final answer
    x = 200,195.03

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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.