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Finding the Fourth Proportional to 166,426.60, 249,672.30 and 71,656.60

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Solution

The fourth proportional to 166,426.60, 249,672.30 and 71,656.60 is: 107,498.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,426.60 : 249,672.30 = 71,656.60 : x
  2. Step 2: Convert to fraction form
    166,426.60/249,672.30 = 71,656.60/x
  3. Step 3: Cross multiply
    166,426.60x = 249,672.30 × 71,656.60
  4. Step 4: Simplify right side
    166,426.60x = 17,890,668,132.18
  5. Step 5: Solve for x
    x = 17,890,668,132.18/166,426.60
  6. Step 6: Final answer
    x = 107,498.85

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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.