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Finding the Fourth Proportional to 125,461.44, 188,153.28 and 42,336

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Solution

The fourth proportional to 125,461.44, 188,153.28 and 42,336 is: 63,490.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,461.44 : 188,153.28 = 42,336 : x
  2. Step 2: Convert to fraction form
    125,461.44/188,153.28 = 42,336/x
  3. Step 3: Cross multiply
    125,461.44x = 188,153.28 × 42,336
  4. Step 4: Simplify right side
    125,461.44x = 7,965,657,262.08
  5. Step 5: Solve for x
    x = 7,965,657,262.08/125,461.44
  6. Step 6: Final answer
    x = 63,490.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.