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Finding the Fourth Proportional to 408,528.70, 612,064.05 and 197,701.90

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Solution

The fourth proportional to 408,528.70, 612,064.05 and 197,701.90 is: 296,200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,528.70 : 612,064.05 = 197,701.90 : x
  2. Step 2: Convert to fraction form
    408,528.70/612,064.05 = 197,701.90/x
  3. Step 3: Cross multiply
    408,528.70x = 612,064.05 × 197,701.90
  4. Step 4: Simplify right side
    408,528.70x = 121,006,225,606.70
  5. Step 5: Solve for x
    x = 121,006,225,606.70/408,528.70
  6. Step 6: Final answer
    x = 296,200.06

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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.