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Finding the Fourth Proportional to 173,153.20, 259,729.80 and 99,220.40

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Solution

The fourth proportional to 173,153.20, 259,729.80 and 99,220.40 is: 148,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,153.20 : 259,729.80 = 99,220.40 : x
  2. Step 2: Convert to fraction form
    173,153.20/259,729.80 = 99,220.40/x
  3. Step 3: Cross multiply
    173,153.20x = 259,729.80 × 99,220.40
  4. Step 4: Simplify right side
    173,153.20x = 25,770,494,647.92
  5. Step 5: Solve for x
    x = 25,770,494,647.92/173,153.20
  6. Step 6: Final answer
    x = 148,830.60

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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.