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Finding the Fourth Proportional to 10,930,129.80, 16,395,194.70 and 5,248,984.20

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Solution

The fourth proportional to 10,930,129.80, 16,395,194.70 and 5,248,984.20 is: 7,873,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,930,129.80 : 16,395,194.70 = 5,248,984.20 : x
  2. Step 2: Convert to fraction form
    10,930,129.80/16,395,194.70 = 5,248,984.20/x
  3. Step 3: Cross multiply
    10,930,129.80x = 16,395,194.70 × 5,248,984.20
  4. Step 4: Simplify right side
    10,930,129.80x = 86,058,117,936,223.73
  5. Step 5: Solve for x
    x = 86,058,117,936,223.73/10,930,129.80
  6. Step 6: Final answer
    x = 7,873,476.30

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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.