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Finding the Fourth Proportional to 8,407,905.65, 12,611,858.64 and 2,018,158.01

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Solution

The fourth proportional to 8,407,905.65, 12,611,858.64 and 2,018,158.01 is: 3,027,237.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,407,905.65 : 12,611,858.64 = 2,018,158.01 : x
  2. Step 2: Convert to fraction form
    8,407,905.65/12,611,858.64 = 2,018,158.01/x
  3. Step 3: Cross multiply
    8,407,905.65x = 12,611,858.64 × 2,018,158.01
  4. Step 4: Simplify right side
    8,407,905.65x = 25,452,723,472,244.41
  5. Step 5: Solve for x
    x = 25,452,723,472,244.41/8,407,905.65
  6. Step 6: Final answer
    x = 3,027,237.05

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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.