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Finding the Fourth Proportional to 251,424.48, 346,966.08 and 136,702.56

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Solution

The fourth proportional to 251,424.48, 346,966.08 and 136,702.56 is: 188,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,424.48 : 346,966.08 = 136,702.56 : x
  2. Step 2: Convert to fraction form
    251,424.48/346,966.08 = 136,702.56/x
  3. Step 3: Cross multiply
    251,424.48x = 346,966.08 × 136,702.56
  4. Step 4: Simplify right side
    251,424.48x = 47,431,151,369.16
  5. Step 5: Solve for x
    x = 47,431,151,369.16/251,424.48
  6. Step 6: Final answer
    x = 188,649.69

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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.