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Finding the Fourth Proportional to 833,252,912.80, 1,248,603,910.80 and 787,336,410.40

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Solution

The fourth proportional to 833,252,912.80, 1,248,603,910.80 and 787,336,410.40 is: 1,179,799,441.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    833,252,912.80 : 1,248,603,910.80 = 787,336,410.40 : x
  2. Step 2: Convert to fraction form
    833,252,912.80/1,248,603,910.80 = 787,336,410.40/x
  3. Step 3: Cross multiply
    833,252,912.80x = 1,248,603,910.80 × 787,336,410.40
  4. Step 4: Simplify right side
    833,252,912.80x = 983,071,321,140,673,664
  5. Step 5: Solve for x
    x = 983,071,321,140,673,664/833,252,912.80
  6. Step 6: Final answer
    x = 1,179,799,441.49

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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.