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Finding the Fourth Proportional to 542,117.70, 812,593.35 and 205,028.10

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Solution

The fourth proportional to 542,117.70, 812,593.35 and 205,028.10 is: 307,321.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,117.70 : 812,593.35 = 205,028.10 : x
  2. Step 2: Convert to fraction form
    542,117.70/812,593.35 = 205,028.10/x
  3. Step 3: Cross multiply
    542,117.70x = 812,593.35 × 205,028.10
  4. Step 4: Simplify right side
    542,117.70x = 166,604,470,623.14
  5. Step 5: Solve for x
    x = 166,604,470,623.14/542,117.70
  6. Step 6: Final answer
    x = 307,321.58

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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.