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Finding the Fourth Proportional to 74,956.80, 112,435.20 and 70,582.80

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Solution

The fourth proportional to 74,956.80, 112,435.20 and 70,582.80 is: 105,874.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,956.80 : 112,435.20 = 70,582.80 : x
  2. Step 2: Convert to fraction form
    74,956.80/112,435.20 = 70,582.80/x
  3. Step 3: Cross multiply
    74,956.80x = 112,435.20 × 70,582.80
  4. Step 4: Simplify right side
    74,956.80x = 7,935,991,234.56
  5. Step 5: Solve for x
    x = 7,935,991,234.56/74,956.80
  6. Step 6: Final answer
    x = 105,874.20

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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.