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Finding the Fourth Proportional to 166,562.40, 249,770.70 and 66,689.40

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Solution

The fourth proportional to 166,562.40, 249,770.70 and 66,689.40 is: 100,004.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,562.40 : 249,770.70 = 66,689.40 : x
  2. Step 2: Convert to fraction form
    166,562.40/249,770.70 = 66,689.40/x
  3. Step 3: Cross multiply
    166,562.40x = 249,770.70 × 66,689.40
  4. Step 4: Simplify right side
    166,562.40x = 16,657,058,120.58
  5. Step 5: Solve for x
    x = 16,657,058,120.58/166,562.40
  6. Step 6: Final answer
    x = 100,004.91

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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.