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Finding the Fourth Proportional to 318,060.16, 476,905.92 and 130,860.16

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Solution

The fourth proportional to 318,060.16, 476,905.92 and 130,860.16 is: 196,214.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,060.16 : 476,905.92 = 130,860.16 : x
  2. Step 2: Convert to fraction form
    318,060.16/476,905.92 = 130,860.16/x
  3. Step 3: Cross multiply
    318,060.16x = 476,905.92 × 130,860.16
  4. Step 4: Simplify right side
    318,060.16x = 62,407,984,996.15
  5. Step 5: Solve for x
    x = 62,407,984,996.15/318,060.16
  6. Step 6: Final answer
    x = 196,214.40

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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.