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Finding the Fourth Proportional to 64,081.48, 88,421.70 and 35,787.28

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Solution

The fourth proportional to 64,081.48, 88,421.70 and 35,787.28 is: 49,380.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,081.48 : 88,421.70 = 35,787.28 : x
  2. Step 2: Convert to fraction form
    64,081.48/88,421.70 = 35,787.28/x
  3. Step 3: Cross multiply
    64,081.48x = 88,421.70 × 35,787.28
  4. Step 4: Simplify right side
    64,081.48x = 3,164,372,135.98
  5. Step 5: Solve for x
    x = 3,164,372,135.98/64,081.48
  6. Step 6: Final answer
    x = 49,380.45

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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.