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Finding the Fourth Proportional to 193,500.80, 289,862.40 and 130,515.20

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Solution

The fourth proportional to 193,500.80, 289,862.40 and 130,515.20 is: 195,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,500.80 : 289,862.40 = 130,515.20 : x
  2. Step 2: Convert to fraction form
    193,500.80/289,862.40 = 130,515.20/x
  3. Step 3: Cross multiply
    193,500.80x = 289,862.40 × 130,515.20
  4. Step 4: Simplify right side
    193,500.80x = 37,831,449,108.48
  5. Step 5: Solve for x
    x = 37,831,449,108.48/193,500.80
  6. Step 6: Final answer
    x = 195,510.56

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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.