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Finding the Fourth Proportional to 1,786,787.99, 2,678,997.12 and 649,415.15

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Solution

The fourth proportional to 1,786,787.99, 2,678,997.12 and 649,415.15 is: 973,692.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,786,787.99 : 2,678,997.12 = 649,415.15 : x
  2. Step 2: Convert to fraction form
    1,786,787.99/2,678,997.12 = 649,415.15/x
  3. Step 3: Cross multiply
    1,786,787.99x = 2,678,997.12 × 649,415.15
  4. Step 4: Simplify right side
    1,786,787.99x = 1,739,781,316,534.37
  5. Step 5: Solve for x
    x = 1,739,781,316,534.37/1,786,787.99
  6. Step 6: Final answer
    x = 973,692.08

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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.