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Finding the Fourth Proportional to 22,908,489.72, 31,611,845.88 and 13,487,793.63

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Solution

The fourth proportional to 22,908,489.72, 31,611,845.88 and 13,487,793.63 is: 18,612,054.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,908,489.72 : 31,611,845.88 = 13,487,793.63 : x
  2. Step 2: Convert to fraction form
    22,908,489.72/31,611,845.88 = 13,487,793.63/x
  3. Step 3: Cross multiply
    22,908,489.72x = 31,611,845.88 × 13,487,793.63
  4. Step 4: Simplify right side
    22,908,489.72x = 426,374,053,492,805.75
  5. Step 5: Solve for x
    x = 426,374,053,492,805.75/22,908,489.72
  6. Step 6: Final answer
    x = 18,612,054.25

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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.