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Finding the Fourth Proportional to 18,791,815.60, 26,251,854.80 and 18,791,815.60

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Solution

The fourth proportional to 18,791,815.60, 26,251,854.80 and 18,791,815.60 is: 26,251,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791,815.60 : 26,251,854.80 = 18,791,815.60 : x
  2. Step 2: Convert to fraction form
    18,791,815.60/26,251,854.80 = 18,791,815.60/x
  3. Step 3: Cross multiply
    18,791,815.60x = 26,251,854.80 × 18,791,815.60
  4. Step 4: Simplify right side
    18,791,815.60x = 493,320,014,559,574.94
  5. Step 5: Solve for x
    x = 493,320,014,559,574.94/18,791,815.60
  6. Step 6: Final answer
    x = 26,251,854.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.