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Finding the Fourth Proportional to 60,921.10, 84,078.93 and 34,065.28

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Solution

The fourth proportional to 60,921.10, 84,078.93 and 34,065.28 is: 47,014.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,921.10 : 84,078.93 = 34,065.28 : x
  2. Step 2: Convert to fraction form
    60,921.10/84,078.93 = 34,065.28/x
  3. Step 3: Cross multiply
    60,921.10x = 84,078.93 × 34,065.28
  4. Step 4: Simplify right side
    60,921.10x = 2,864,172,292.55
  5. Step 5: Solve for x
    x = 2,864,172,292.55/60,921.10
  6. Step 6: Final answer
    x = 47,014.45

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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.