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Finding the Fourth Proportional to 61,407.77, 84,742.57 and 34,550.31

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Solution

The fourth proportional to 61,407.77, 84,742.57 and 34,550.31 is: 47,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,407.77 : 84,742.57 = 34,550.31 : x
  2. Step 2: Convert to fraction form
    61,407.77/84,742.57 = 34,550.31/x
  3. Step 3: Cross multiply
    61,407.77x = 84,742.57 × 34,550.31
  4. Step 4: Simplify right side
    61,407.77x = 2,927,881,921.40
  5. Step 5: Solve for x
    x = 2,927,881,921.40/61,407.77
  6. Step 6: Final answer
    x = 47,679.34

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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.