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Finding the Fourth Proportional to 166,662.60, 249,993.90 and 42,003.60

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Solution

The fourth proportional to 166,662.60, 249,993.90 and 42,003.60 is: 63,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,662.60 : 249,993.90 = 42,003.60 : x
  2. Step 2: Convert to fraction form
    166,662.60/249,993.90 = 42,003.60/x
  3. Step 3: Cross multiply
    166,662.60x = 249,993.90 × 42,003.60
  4. Step 4: Simplify right side
    166,662.60x = 10,500,643,778.04
  5. Step 5: Solve for x
    x = 10,500,643,778.04/166,662.60
  6. Step 6: Final answer
    x = 63,005.40

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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.