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Finding the Fourth Proportional to 22,653,611.12, 31,259,653.17 and 12,728,917.64

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Solution

The fourth proportional to 22,653,611.12, 31,259,653.17 and 12,728,917.64 is: 17,564,597.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,653,611.12 : 31,259,653.17 = 12,728,917.64 : x
  2. Step 2: Convert to fraction form
    22,653,611.12/31,259,653.17 = 12,728,917.64/x
  3. Step 3: Cross multiply
    22,653,611.12x = 31,259,653.17 × 12,728,917.64
  4. Step 4: Simplify right side
    22,653,611.12x = 397,901,550,655,894.94
  5. Step 5: Solve for x
    x = 397,901,550,655,894.94/22,653,611.12
  6. Step 6: Final answer
    x = 17,564,597.03

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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.