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Finding the Fourth Proportional to 577,603.62, 866,221.16 and 198,432.90

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Solution

The fourth proportional to 577,603.62, 866,221.16 and 198,432.90 is: 297,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,603.62 : 866,221.16 = 198,432.90 : x
  2. Step 2: Convert to fraction form
    577,603.62/866,221.16 = 198,432.90/x
  3. Step 3: Cross multiply
    577,603.62x = 866,221.16 × 198,432.90
  4. Step 4: Simplify right side
    577,603.62x = 171,886,775,828.00
  5. Step 5: Solve for x
    x = 171,886,775,828.00/577,603.62
  6. Step 6: Final answer
    x = 297,586.04

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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.