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Finding the Fourth Proportional to 618,892.50, 928,351.70 and 198,167.16

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Solution

The fourth proportional to 618,892.50, 928,351.70 and 198,167.16 is: 297,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,892.50 : 928,351.70 = 198,167.16 : x
  2. Step 2: Convert to fraction form
    618,892.50/928,351.70 = 198,167.16/x
  3. Step 3: Cross multiply
    618,892.50x = 928,351.70 × 198,167.16
  4. Step 4: Simplify right side
    618,892.50x = 183,968,819,870.17
  5. Step 5: Solve for x
    x = 183,968,819,870.17/618,892.50
  6. Step 6: Final answer
    x = 297,254.89

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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.