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Finding the Fourth Proportional to 156,438,205.20, 219,466,983.60 and 156,438,205.20

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Solution

The fourth proportional to 156,438,205.20, 219,466,983.60 and 156,438,205.20 is: 219,466,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,438,205.20 : 219,466,983.60 = 156,438,205.20 : x
  2. Step 2: Convert to fraction form
    156,438,205.20/219,466,983.60 = 156,438,205.20/x
  3. Step 3: Cross multiply
    156,438,205.20x = 219,466,983.60 × 156,438,205.20
  4. Step 4: Simplify right side
    156,438,205.20x = 34,333,021,015,041,832
  5. Step 5: Solve for x
    x = 34,333,021,015,041,832/156,438,205.20
  6. Step 6: Final answer
    x = 219,466,983.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.