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Finding the Fourth Proportional to 69,692,469.60, 104,538,704.40 and 42,482,690.40

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Solution

The fourth proportional to 69,692,469.60, 104,538,704.40 and 42,482,690.40 is: 63,724,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,692,469.60 : 104,538,704.40 = 42,482,690.40 : x
  2. Step 2: Convert to fraction form
    69,692,469.60/104,538,704.40 = 42,482,690.40/x
  3. Step 3: Cross multiply
    69,692,469.60x = 104,538,704.40 × 42,482,690.40
  4. Step 4: Simplify right side
    69,692,469.60x = 4,441,085,413,842,318
  5. Step 5: Solve for x
    x = 4,441,085,413,842,318/69,692,469.60
  6. Step 6: Final answer
    x = 63,724,035.60

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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.