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Finding the Fourth Proportional to 180,667.55, 249,314.60 and 104,189.87

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Solution

The fourth proportional to 180,667.55, 249,314.60 and 104,189.87 is: 143,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,667.55 : 249,314.60 = 104,189.87 : x
  2. Step 2: Convert to fraction form
    180,667.55/249,314.60 = 104,189.87/x
  3. Step 3: Cross multiply
    180,667.55x = 249,314.60 × 104,189.87
  4. Step 4: Simplify right side
    180,667.55x = 25,976,053,995.58
  5. Step 5: Solve for x
    x = 25,976,053,995.58/180,667.55
  6. Step 6: Final answer
    x = 143,778.20

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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.