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Finding the Fourth Proportional to 18,687,068.60, 28,030,602.90 and 17,553,327.80

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Solution

The fourth proportional to 18,687,068.60, 28,030,602.90 and 17,553,327.80 is: 26,329,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,068.60 : 28,030,602.90 = 17,553,327.80 : x
  2. Step 2: Convert to fraction form
    18,687,068.60/28,030,602.90 = 17,553,327.80/x
  3. Step 3: Cross multiply
    18,687,068.60x = 28,030,602.90 × 17,553,327.80
  4. Step 4: Simplify right side
    18,687,068.60x = 492,030,361,135,330.62
  5. Step 5: Solve for x
    x = 492,030,361,135,330.62/18,687,068.60
  6. Step 6: Final answer
    x = 26,329,991.70

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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.