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Finding the Fourth Proportional to 129,583,673.60, 194,378,620.80 and 38,710,227.20

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Solution

The fourth proportional to 129,583,673.60, 194,378,620.80 and 38,710,227.20 is: 58,066,269.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,583,673.60 : 194,378,620.80 = 38,710,227.20 : x
  2. Step 2: Convert to fraction form
    129,583,673.60/194,378,620.80 = 38,710,227.20/x
  3. Step 3: Cross multiply
    129,583,673.60x = 194,378,620.80 × 38,710,227.20
  4. Step 4: Simplify right side
    129,583,673.60x = 7,524,440,573,990,647
  5. Step 5: Solve for x
    x = 7,524,440,573,990,647/129,583,673.60
  6. Step 6: Final answer
    x = 58,066,269.96

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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.