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Finding the Fourth Proportional to 4,974,649.88, 6,864,406.46 and 3,138,415.64

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Solution

The fourth proportional to 4,974,649.88, 6,864,406.46 and 3,138,415.64 is: 4,330,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,974,649.88 : 6,864,406.46 = 3,138,415.64 : x
  2. Step 2: Convert to fraction form
    4,974,649.88/6,864,406.46 = 3,138,415.64/x
  3. Step 3: Cross multiply
    4,974,649.88x = 6,864,406.46 × 3,138,415.64
  4. Step 4: Simplify right side
    4,974,649.88x = 21,543,360,593,381.04
  5. Step 5: Solve for x
    x = 21,543,360,593,381.04/4,974,649.88
  6. Step 6: Final answer
    x = 4,330,628.51

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.