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Finding the Fourth Proportional to 3,791,326.47, 5,686,989.72 and 1,266,981.72

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Solution

The fourth proportional to 3,791,326.47, 5,686,989.72 and 1,266,981.72 is: 1,900,472.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,791,326.47 : 5,686,989.72 = 1,266,981.72 : x
  2. Step 2: Convert to fraction form
    3,791,326.47/5,686,989.72 = 1,266,981.72/x
  3. Step 3: Cross multiply
    3,791,326.47x = 5,686,989.72 × 1,266,981.72
  4. Step 4: Simplify right side
    3,791,326.47x = 7,205,312,017,067.92
  5. Step 5: Solve for x
    x = 7,205,312,017,067.92/3,791,326.47
  6. Step 6: Final answer
    x = 1,900,472.59

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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.