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Finding the Fourth Proportional to 18,617,364.60, 27,926,046.90 and 12,877,801.80

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Solution

The fourth proportional to 18,617,364.60, 27,926,046.90 and 12,877,801.80 is: 19,316,702.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617,364.60 : 27,926,046.90 = 12,877,801.80 : x
  2. Step 2: Convert to fraction form
    18,617,364.60/27,926,046.90 = 12,877,801.80/x
  3. Step 3: Cross multiply
    18,617,364.60x = 27,926,046.90 × 12,877,801.80
  4. Step 4: Simplify right side
    18,617,364.60x = 359,626,097,035,704.44
  5. Step 5: Solve for x
    x = 359,626,097,035,704.44/18,617,364.60
  6. Step 6: Final answer
    x = 19,316,702.70

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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.