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Finding the Fourth Proportional to 1,939,692.96, 2,676,775.32 and 1,124,369.10

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Solution

The fourth proportional to 1,939,692.96, 2,676,775.32 and 1,124,369.10 is: 1,551,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939,692.96 : 2,676,775.32 = 1,124,369.10 : x
  2. Step 2: Convert to fraction form
    1,939,692.96/2,676,775.32 = 1,124,369.10/x
  3. Step 3: Cross multiply
    1,939,692.96x = 2,676,775.32 × 1,124,369.10
  4. Step 4: Simplify right side
    1,939,692.96x = 3,009,683,457,450.61
  5. Step 5: Solve for x
    x = 3,009,683,457,450.61/1,939,692.96
  6. Step 6: Final answer
    x = 1,551,628.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.