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Finding the Fourth Proportional to 6,659,678.34, 9,985,472.28 and 2,611,315.92

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Solution

The fourth proportional to 6,659,678.34, 9,985,472.28 and 2,611,315.92 is: 3,915,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659,678.34 : 9,985,472.28 = 2,611,315.92 : x
  2. Step 2: Convert to fraction form
    6,659,678.34/9,985,472.28 = 2,611,315.92/x
  3. Step 3: Cross multiply
    6,659,678.34x = 9,985,472.28 × 2,611,315.92
  4. Step 4: Simplify right side
    6,659,678.34x = 26,075,222,733,482.70
  5. Step 5: Solve for x
    x = 26,075,222,733,482.70/6,659,678.34
  6. Step 6: Final answer
    x = 3,915,387.71

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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.