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Finding the Fourth Proportional to 161,686, 223,126.68 and 94,618

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Solution

The fourth proportional to 161,686, 223,126.68 and 94,618 is: 130,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,686 : 223,126.68 = 94,618 : x
  2. Step 2: Convert to fraction form
    161,686/223,126.68 = 94,618/x
  3. Step 3: Cross multiply
    161,686x = 223,126.68 × 94,618
  4. Step 4: Simplify right side
    161,686x = 21,111,800,208.24
  5. Step 5: Solve for x
    x = 21,111,800,208.24/161,686
  6. Step 6: Final answer
    x = 130,572.84

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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.