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Finding the Fourth Proportional to 118,486.10, 163,402.44 and 92,648

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Solution

The fourth proportional to 118,486.10, 163,402.44 and 92,648 is: 127,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,486.10 : 163,402.44 = 92,648 : x
  2. Step 2: Convert to fraction form
    118,486.10/163,402.44 = 92,648/x
  3. Step 3: Cross multiply
    118,486.10x = 163,402.44 × 92,648
  4. Step 4: Simplify right side
    118,486.10x = 15,138,909,261.12
  5. Step 5: Solve for x
    x = 15,138,909,261.12/118,486.10
  6. Step 6: Final answer
    x = 127,769.50

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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.