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Finding the Fourth Proportional to 73,139.40, 109,676.70 and 33,708.60

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Solution

The fourth proportional to 73,139.40, 109,676.70 and 33,708.60 is: 50,547.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,139.40 : 109,676.70 = 33,708.60 : x
  2. Step 2: Convert to fraction form
    73,139.40/109,676.70 = 33,708.60/x
  3. Step 3: Cross multiply
    73,139.40x = 109,676.70 × 33,708.60
  4. Step 4: Simplify right side
    73,139.40x = 3,697,048,009.62
  5. Step 5: Solve for x
    x = 3,697,048,009.62/73,139.40
  6. Step 6: Final answer
    x = 50,547.97

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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.