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Finding the Fourth Proportional to 5,784,871.90, 8,671,189.80 and 2,139,259.18

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Solution

The fourth proportional to 5,784,871.90, 8,671,189.80 and 2,139,259.18 is: 3,206,626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,784,871.90 : 8,671,189.80 = 2,139,259.18 : x
  2. Step 2: Convert to fraction form
    5,784,871.90/8,671,189.80 = 2,139,259.18/x
  3. Step 3: Cross multiply
    5,784,871.90x = 8,671,189.80 × 2,139,259.18
  4. Step 4: Simplify right side
    5,784,871.90x = 18,549,922,381,172.37
  5. Step 5: Solve for x
    x = 18,549,922,381,172.37/5,784,871.90
  6. Step 6: Final answer
    x = 3,206,626.30

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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.