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Finding the Fourth Proportional to 72,658,336.80, 108,984,880.80 and 29,526,322.80

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Solution

The fourth proportional to 72,658,336.80, 108,984,880.80 and 29,526,322.80 is: 44,288,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,658,336.80 : 108,984,880.80 = 29,526,322.80 : x
  2. Step 2: Convert to fraction form
    72,658,336.80/108,984,880.80 = 29,526,322.80/x
  3. Step 3: Cross multiply
    72,658,336.80x = 108,984,880.80 × 29,526,322.80
  4. Step 4: Simplify right side
    72,658,336.80x = 3,217,922,770,820,322
  5. Step 5: Solve for x
    x = 3,217,922,770,820,322/72,658,336.80
  6. Step 6: Final answer
    x = 44,288,417.72

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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.