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Finding the Fourth Proportional to 611,469,643.75, 917,135,778.94 and 168,875,243.85

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Solution

The fourth proportional to 611,469,643.75, 917,135,778.94 and 168,875,243.85 is: 253,293,895.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,469,643.75 : 917,135,778.94 = 168,875,243.85 : x
  2. Step 2: Convert to fraction form
    611,469,643.75/917,135,778.94 = 168,875,243.85/x
  3. Step 3: Cross multiply
    611,469,643.75x = 917,135,778.94 × 168,875,243.85
  4. Step 4: Simplify right side
    611,469,643.75x = 154,881,528,315,069,248
  5. Step 5: Solve for x
    x = 154,881,528,315,069,248/611,469,643.75
  6. Step 6: Final answer
    x = 253,293,895.94

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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.