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Finding the Fourth Proportional to 96,643.80, 144,965.70 and 57,180.60

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Solution

The fourth proportional to 96,643.80, 144,965.70 and 57,180.60 is: 85,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,643.80 : 144,965.70 = 57,180.60 : x
  2. Step 2: Convert to fraction form
    96,643.80/144,965.70 = 57,180.60/x
  3. Step 3: Cross multiply
    96,643.80x = 144,965.70 × 57,180.60
  4. Step 4: Simplify right side
    96,643.80x = 8,289,225,705.42
  5. Step 5: Solve for x
    x = 8,289,225,705.42/96,643.80
  6. Step 6: Final answer
    x = 85,770.90

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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.