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Finding the Fourth Proportional to 73,235.20, 109,852.80 and 54,572.80

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Solution

The fourth proportional to 73,235.20, 109,852.80 and 54,572.80 is: 81,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,235.20 : 109,852.80 = 54,572.80 : x
  2. Step 2: Convert to fraction form
    73,235.20/109,852.80 = 54,572.80/x
  3. Step 3: Cross multiply
    73,235.20x = 109,852.80 × 54,572.80
  4. Step 4: Simplify right side
    73,235.20x = 5,994,974,883.84
  5. Step 5: Solve for x
    x = 5,994,974,883.84/73,235.20
  6. Step 6: Final answer
    x = 81,859.20

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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.