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Finding the Fourth Proportional to 2,976,807.80, 4,465,211.70 and 2,955,812.60

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Solution

The fourth proportional to 2,976,807.80, 4,465,211.70 and 2,955,812.60 is: 4,433,718.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976,807.80 : 4,465,211.70 = 2,955,812.60 : x
  2. Step 2: Convert to fraction form
    2,976,807.80/4,465,211.70 = 2,955,812.60/x
  3. Step 3: Cross multiply
    2,976,807.80x = 4,465,211.70 × 2,955,812.60
  4. Step 4: Simplify right side
    2,976,807.80x = 13,198,329,004,527.42
  5. Step 5: Solve for x
    x = 13,198,329,004,527.42/2,976,807.80
  6. Step 6: Final answer
    x = 4,433,718.90

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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.