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Finding the Fourth Proportional to 4,839,978.50, 6,679,560.81 and 2,775,186.19

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Solution

The fourth proportional to 4,839,978.50, 6,679,560.81 and 2,775,186.19 is: 3,829,980.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,839,978.50 : 6,679,560.81 = 2,775,186.19 : x
  2. Step 2: Convert to fraction form
    4,839,978.50/6,679,560.81 = 2,775,186.19/x
  3. Step 3: Cross multiply
    4,839,978.50x = 6,679,560.81 × 2,775,186.19
  4. Step 4: Simplify right side
    4,839,978.50x = 18,537,024,915,177.21
  5. Step 5: Solve for x
    x = 18,537,024,915,177.21/4,839,978.50
  6. Step 6: Final answer
    x = 3,829,980.84

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1.5x scale

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.