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Finding the Fourth Proportional to 524,062.20, 786,438.90 and 191,638.20

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Solution

The fourth proportional to 524,062.20, 786,438.90 and 191,638.20 is: 287,583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,062.20 : 786,438.90 = 191,638.20 : x
  2. Step 2: Convert to fraction form
    524,062.20/786,438.90 = 191,638.20/x
  3. Step 3: Cross multiply
    524,062.20x = 786,438.90 × 191,638.20
  4. Step 4: Simplify right side
    524,062.20x = 150,711,735,205.98
  5. Step 5: Solve for x
    x = 150,711,735,205.98/524,062.20
  6. Step 6: Final answer
    x = 287,583.68

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1.5x scale

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.