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Finding the Fourth Proportional to 8,654,879.80, 12,982,319.70 and 3,605,534.20

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Solution

The fourth proportional to 8,654,879.80, 12,982,319.70 and 3,605,534.20 is: 5,408,301.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654,879.80 : 12,982,319.70 = 3,605,534.20 : x
  2. Step 2: Convert to fraction form
    8,654,879.80/12,982,319.70 = 3,605,534.20/x
  3. Step 3: Cross multiply
    8,654,879.80x = 12,982,319.70 × 3,605,534.20
  4. Step 4: Simplify right side
    8,654,879.80x = 46,808,197,673,683.74
  5. Step 5: Solve for x
    x = 46,808,197,673,683.74/8,654,879.80
  6. Step 6: Final answer
    x = 5,408,301.30

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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.