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Finding the Fourth Proportional to 1,738,315.84, 2,398,986.72 and 974,369.60

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Solution

The fourth proportional to 1,738,315.84, 2,398,986.72 and 974,369.60 is: 1,344,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738,315.84 : 2,398,986.72 = 974,369.60 : x
  2. Step 2: Convert to fraction form
    1,738,315.84/2,398,986.72 = 974,369.60/x
  3. Step 3: Cross multiply
    1,738,315.84x = 2,398,986.72 × 974,369.60
  4. Step 4: Simplify right side
    1,738,315.84x = 2,337,499,730,771.71
  5. Step 5: Solve for x
    x = 2,337,499,730,771.71/1,738,315.84
  6. Step 6: Final answer
    x = 1,344,692.19

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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.