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Finding the Fourth Proportional to 618,853.37, 928,293.01 and 198,128.03

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Solution

The fourth proportional to 618,853.37, 928,293.01 and 198,128.03 is: 297,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,853.37 : 928,293.01 = 198,128.03 : x
  2. Step 2: Convert to fraction form
    618,853.37/928,293.01 = 198,128.03/x
  3. Step 3: Cross multiply
    618,853.37x = 928,293.01 × 198,128.03
  4. Step 4: Simplify right side
    618,853.37x = 183,920,860,197.29
  5. Step 5: Solve for x
    x = 183,920,860,197.29/618,853.37
  6. Step 6: Final answer
    x = 297,196.19

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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.