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Finding the Fourth Proportional to 506,402.20, 759,603.30 and 132,425.20

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Solution

The fourth proportional to 506,402.20, 759,603.30 and 132,425.20 is: 198,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,402.20 : 759,603.30 = 132,425.20 : x
  2. Step 2: Convert to fraction form
    506,402.20/759,603.30 = 132,425.20/x
  3. Step 3: Cross multiply
    506,402.20x = 759,603.30 × 132,425.20
  4. Step 4: Simplify right side
    506,402.20x = 100,590,618,923.16
  5. Step 5: Solve for x
    x = 100,590,618,923.16/506,402.20
  6. Step 6: Final answer
    x = 198,637.80

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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.