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Finding the Fourth Proportional to 61,709.51, 85,159.55 and 39,058.27

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Solution

The fourth proportional to 61,709.51, 85,159.55 and 39,058.27 is: 53,900.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,709.51 : 85,159.55 = 39,058.27 : x
  2. Step 2: Convert to fraction form
    61,709.51/85,159.55 = 39,058.27/x
  3. Step 3: Cross multiply
    61,709.51x = 85,159.55 × 39,058.27
  4. Step 4: Simplify right side
    61,709.51x = 3,326,184,581.73
  5. Step 5: Solve for x
    x = 3,326,184,581.73/61,709.51
  6. Step 6: Final answer
    x = 53,900.68

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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.