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Finding the Fourth Proportional to 18,692,598.60, 28,038,897.90 and 8,614,902.60

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Solution

The fourth proportional to 18,692,598.60, 28,038,897.90 and 8,614,902.60 is: 12,922,353.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692,598.60 : 28,038,897.90 = 8,614,902.60 : x
  2. Step 2: Convert to fraction form
    18,692,598.60/28,038,897.90 = 8,614,902.60/x
  3. Step 3: Cross multiply
    18,692,598.60x = 28,038,897.90 × 8,614,902.60
  4. Step 4: Simplify right side
    18,692,598.60x = 241,552,374,419,844.53
  5. Step 5: Solve for x
    x = 241,552,374,419,844.53/18,692,598.60
  6. Step 6: Final answer
    x = 12,922,353.90

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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.