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Finding the Fourth Proportional to 188,984,909.60, 283,477,364.40 and 127,762,906.40

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Solution

The fourth proportional to 188,984,909.60, 283,477,364.40 and 127,762,906.40 is: 191,644,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,984,909.60 : 283,477,364.40 = 127,762,906.40 : x
  2. Step 2: Convert to fraction form
    188,984,909.60/283,477,364.40 = 127,762,906.40/x
  3. Step 3: Cross multiply
    188,984,909.60x = 283,477,364.40 × 127,762,906.40
  4. Step 4: Simplify right side
    188,984,909.60x = 36,217,891,974,355,888
  5. Step 5: Solve for x
    x = 36,217,891,974,355,888/188,984,909.60
  6. Step 6: Final answer
    x = 191,644,359.60

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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.