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Finding the Fourth Proportional to 515,373.55, 773,047.60 and 199,830.53

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Solution

The fourth proportional to 515,373.55, 773,047.60 and 199,830.53 is: 299,740.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,373.55 : 773,047.60 = 199,830.53 : x
  2. Step 2: Convert to fraction form
    515,373.55/773,047.60 = 199,830.53/x
  3. Step 3: Cross multiply
    515,373.55x = 773,047.60 × 199,830.53
  4. Step 4: Simplify right side
    515,373.55x = 154,478,511,623.23
  5. Step 5: Solve for x
    x = 154,478,511,623.23/515,373.55
  6. Step 6: Final answer
    x = 299,740.86

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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.