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Finding the Fourth Proportional to 105,997,503.92, 146,177,866.80 and 68,787,998.01

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Solution

The fourth proportional to 105,997,503.92, 146,177,866.80 and 68,787,998.01 is: 94,863,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,997,503.92 : 146,177,866.80 = 68,787,998.01 : x
  2. Step 2: Convert to fraction form
    105,997,503.92/146,177,866.80 = 68,787,998.01/x
  3. Step 3: Cross multiply
    105,997,503.92x = 146,177,866.80 × 68,787,998.01
  4. Step 4: Simplify right side
    105,997,503.92x = 10,055,282,810,544,446
  5. Step 5: Solve for x
    x = 10,055,282,810,544,446/105,997,503.92
  6. Step 6: Final answer
    x = 94,863,392.43

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1.5x scale

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.