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Finding the Fourth Proportional to 70,625,696.40, 105,942,043.80 and 36,613,472.40

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Solution

The fourth proportional to 70,625,696.40, 105,942,043.80 and 36,613,472.40 is: 54,922,022.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,625,696.40 : 105,942,043.80 = 36,613,472.40 : x
  2. Step 2: Convert to fraction form
    70,625,696.40/105,942,043.80 = 36,613,472.40/x
  3. Step 3: Cross multiply
    70,625,696.40x = 105,942,043.80 × 36,613,472.40
  4. Step 4: Simplify right side
    70,625,696.40x = 3,878,906,096,670,891
  5. Step 5: Solve for x
    x = 3,878,906,096,670,891/70,625,696.40
  6. Step 6: Final answer
    x = 54,922,022.64

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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.