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Finding the Fourth Proportional to 70,662.16, 105,993.24 and 35,631.28

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Solution

The fourth proportional to 70,662.16, 105,993.24 and 35,631.28 is: 53,446.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,662.16 : 105,993.24 = 35,631.28 : x
  2. Step 2: Convert to fraction form
    70,662.16/105,993.24 = 35,631.28/x
  3. Step 3: Cross multiply
    70,662.16x = 105,993.24 × 35,631.28
  4. Step 4: Simplify right side
    70,662.16x = 3,776,674,812.55
  5. Step 5: Solve for x
    x = 3,776,674,812.55/70,662.16
  6. Step 6: Final answer
    x = 53,446.92

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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.