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Finding the Fourth Proportional to 988,733,336.56, 1,482,265,900.86 and 813,865,000.57

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Solution

The fourth proportional to 988,733,336.56, 1,482,265,900.86 and 813,865,000.57 is: 1,220,110,917.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,733,336.56 : 1,482,265,900.86 = 813,865,000.57 : x
  2. Step 2: Convert to fraction form
    988,733,336.56/1,482,265,900.86 = 813,865,000.57/x
  3. Step 3: Cross multiply
    988,733,336.56x = 1,482,265,900.86 × 813,865,000.57
  4. Step 4: Simplify right side
    988,733,336.56x = 1,206,364,338,248,315,392
  5. Step 5: Solve for x
    x = 1,206,364,338,248,315,392/988,733,336.56
  6. Step 6: Final answer
    x = 1,220,110,917.31

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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.