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Finding the Fourth Proportional to 223,086.55, 307,863.01 and 121,111.93

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Solution

The fourth proportional to 223,086.55, 307,863.01 and 121,111.93 is: 167,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,086.55 : 307,863.01 = 121,111.93 : x
  2. Step 2: Convert to fraction form
    223,086.55/307,863.01 = 121,111.93/x
  3. Step 3: Cross multiply
    223,086.55x = 307,863.01 × 121,111.93
  4. Step 4: Simplify right side
    223,086.55x = 37,285,883,316.71
  5. Step 5: Solve for x
    x = 37,285,883,316.71/223,086.55
  6. Step 6: Final answer
    x = 167,136.40

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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.