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Finding the Fourth Proportional to 70,659.40, 105,935.10 and 35,624.20

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Solution

The fourth proportional to 70,659.40, 105,935.10 and 35,624.20 is: 53,409.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,659.40 : 105,935.10 = 35,624.20 : x
  2. Step 2: Convert to fraction form
    70,659.40/105,935.10 = 35,624.20/x
  3. Step 3: Cross multiply
    70,659.40x = 105,935.10 × 35,624.20
  4. Step 4: Simplify right side
    70,659.40x = 3,773,853,189.42
  5. Step 5: Solve for x
    x = 3,773,853,189.42/70,659.40
  6. Step 6: Final answer
    x = 53,409.07

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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.