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Finding the Fourth Proportional to 243,513.67, 365,269.29 and 66,020.40

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Solution

The fourth proportional to 243,513.67, 365,269.29 and 66,020.40 is: 99,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,513.67 : 365,269.29 = 66,020.40 : x
  2. Step 2: Convert to fraction form
    243,513.67/365,269.29 = 66,020.40/x
  3. Step 3: Cross multiply
    243,513.67x = 365,269.29 × 66,020.40
  4. Step 4: Simplify right side
    243,513.67x = 24,115,224,633.52
  5. Step 5: Solve for x
    x = 24,115,224,633.52/243,513.67
  6. Step 6: Final answer
    x = 99,030.27

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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.