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Finding the Fourth Proportional to 6,920,746.80, 10,378,009.80 and 2,659,498.80

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Solution

The fourth proportional to 6,920,746.80, 10,378,009.80 and 2,659,498.80 is: 3,988,052.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920,746.80 : 10,378,009.80 = 2,659,498.80 : x
  2. Step 2: Convert to fraction form
    6,920,746.80/10,378,009.80 = 2,659,498.80/x
  3. Step 3: Cross multiply
    6,920,746.80x = 10,378,009.80 × 2,659,498.80
  4. Step 4: Simplify right side
    6,920,746.80x = 27,600,304,609,488.24
  5. Step 5: Solve for x
    x = 27,600,304,609,488.24/6,920,746.80
  6. Step 6: Final answer
    x = 3,988,052.94

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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.