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Finding the Fourth Proportional to 47,009,780.40, 70,381,960.20 and 47,009,780.40

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Solution

The fourth proportional to 47,009,780.40, 70,381,960.20 and 47,009,780.40 is: 70,381,960.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,009,780.40 : 70,381,960.20 = 47,009,780.40 : x
  2. Step 2: Convert to fraction form
    47,009,780.40/70,381,960.20 = 47,009,780.40/x
  3. Step 3: Cross multiply
    47,009,780.40x = 70,381,960.20 × 47,009,780.40
  4. Step 4: Simplify right side
    47,009,780.40x = 3,308,640,493,123,540
  5. Step 5: Solve for x
    x = 3,308,640,493,123,540/47,009,780.40
  6. Step 6: Final answer
    x = 70,381,960.20

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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.