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Finding the Fourth Proportional to 479,646,591.84, 719,538,519.36 and 147,681,689.51

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Solution

The fourth proportional to 479,646,591.84, 719,538,519.36 and 147,681,689.51 is: 221,543,665.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,646,591.84 : 719,538,519.36 = 147,681,689.51 : x
  2. Step 2: Convert to fraction form
    479,646,591.84/719,538,519.36 = 147,681,689.51/x
  3. Step 3: Cross multiply
    479,646,591.84x = 719,538,519.36 × 147,681,689.51
  4. Step 4: Simplify right side
    479,646,591.84x = 106,262,664,206,608,640
  5. Step 5: Solve for x
    x = 106,262,664,206,608,640/479,646,591.84
  6. Step 6: Final answer
    x = 221,543,665.72

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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.