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Finding the Fourth Proportional to 70,444.80, 105,744.96 and 55,748.16

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Solution

The fourth proportional to 70,444.80, 105,744.96 and 55,748.16 is: 83,683.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,444.80 : 105,744.96 = 55,748.16 : x
  2. Step 2: Convert to fraction form
    70,444.80/105,744.96 = 55,748.16/x
  3. Step 3: Cross multiply
    70,444.80x = 105,744.96 × 55,748.16
  4. Step 4: Simplify right side
    70,444.80x = 5,895,086,949.27
  5. Step 5: Solve for x
    x = 5,895,086,949.27/70,444.80
  6. Step 6: Final answer
    x = 83,683.78

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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.