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Finding the Fourth Proportional to 61,342.94, 84,656.59 and 34,121.90

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Solution

The fourth proportional to 61,342.94, 84,656.59 and 34,121.90 is: 47,090.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,342.94 : 84,656.59 = 34,121.90 : x
  2. Step 2: Convert to fraction form
    61,342.94/84,656.59 = 34,121.90/x
  3. Step 3: Cross multiply
    61,342.94x = 84,656.59 × 34,121.90
  4. Step 4: Simplify right side
    61,342.94x = 2,888,643,698.32
  5. Step 5: Solve for x
    x = 2,888,643,698.32/61,342.94
  6. Step 6: Final answer
    x = 47,090.08

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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.