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Finding the Fourth Proportional to 18,668,844.60, 28,003,266.90 and 17,073,209.40

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Solution

The fourth proportional to 18,668,844.60, 28,003,266.90 and 17,073,209.40 is: 25,609,814.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668,844.60 : 28,003,266.90 = 17,073,209.40 : x
  2. Step 2: Convert to fraction form
    18,668,844.60/28,003,266.90 = 17,073,209.40/x
  3. Step 3: Cross multiply
    18,668,844.60x = 28,003,266.90 × 17,073,209.40
  4. Step 4: Simplify right side
    18,668,844.60x = 478,105,639,667,788.81
  5. Step 5: Solve for x
    x = 478,105,639,667,788.81/18,668,844.60
  6. Step 6: Final answer
    x = 25,609,814.10

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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.