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Finding the Fourth Proportional to 873,863,848.87, 1,205,949,888.54 and 477,412,516.51

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Solution

The fourth proportional to 873,863,848.87, 1,205,949,888.54 and 477,412,516.51 is: 658,838,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,863,848.87 : 1,205,949,888.54 = 477,412,516.51 : x
  2. Step 2: Convert to fraction form
    873,863,848.87/1,205,949,888.54 = 477,412,516.51/x
  3. Step 3: Cross multiply
    873,863,848.87x = 1,205,949,888.54 × 477,412,516.51
  4. Step 4: Simplify right side
    873,863,848.87x = 575,735,571,072,835,392
  5. Step 5: Solve for x
    x = 575,735,571,072,835,392/873,863,848.87
  6. Step 6: Final answer
    x = 658,838,984.83

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Why These Related Problems?

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