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Finding the Fourth Proportional to 65,176.78, 89,943.90 and 35,368.78

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Solution

The fourth proportional to 65,176.78, 89,943.90 and 35,368.78 is: 48,808.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,176.78 : 89,943.90 = 35,368.78 : x
  2. Step 2: Convert to fraction form
    65,176.78/89,943.90 = 35,368.78/x
  3. Step 3: Cross multiply
    65,176.78x = 89,943.90 × 35,368.78
  4. Step 4: Simplify right side
    65,176.78x = 3,181,206,011.44
  5. Step 5: Solve for x
    x = 3,181,206,011.44/65,176.78
  6. Step 6: Final answer
    x = 48,808.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.