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Finding the Fourth Proportional to 75,670.60, 113,570.70 and 33,615.40

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Solution

The fourth proportional to 75,670.60, 113,570.70 and 33,615.40 is: 50,451.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,670.60 : 113,570.70 = 33,615.40 : x
  2. Step 2: Convert to fraction form
    75,670.60/113,570.70 = 33,615.40/x
  3. Step 3: Cross multiply
    75,670.60x = 113,570.70 × 33,615.40
  4. Step 4: Simplify right side
    75,670.60x = 3,817,724,508.78
  5. Step 5: Solve for x
    x = 3,817,724,508.78/75,670.60
  6. Step 6: Final answer
    x = 50,451.89

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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.