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Finding the Fourth Proportional to 60,928.90, 84,054.81 and 39,703.30

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Solution

The fourth proportional to 60,928.90, 84,054.81 and 39,703.30 is: 54,772.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,928.90 : 84,054.81 = 39,703.30 : x
  2. Step 2: Convert to fraction form
    60,928.90/84,054.81 = 39,703.30/x
  3. Step 3: Cross multiply
    60,928.90x = 84,054.81 × 39,703.30
  4. Step 4: Simplify right side
    60,928.90x = 3,337,253,337.87
  5. Step 5: Solve for x
    x = 3,337,253,337.87/60,928.90
  6. Step 6: Final answer
    x = 54,772.91

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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.