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Finding the Fourth Proportional to 166,593.40, 249,817.20 and 66,720.40

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Solution

The fourth proportional to 166,593.40, 249,817.20 and 66,720.40 is: 100,051.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,593.40 : 249,817.20 = 66,720.40 : x
  2. Step 2: Convert to fraction form
    166,593.40/249,817.20 = 66,720.40/x
  3. Step 3: Cross multiply
    166,593.40x = 249,817.20 × 66,720.40
  4. Step 4: Simplify right side
    166,593.40x = 16,667,903,510.88
  5. Step 5: Solve for x
    x = 16,667,903,510.88/166,593.40
  6. Step 6: Final answer
    x = 100,051.40

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1.5x scale

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.