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Finding the Fourth Proportional to 63,058.60, 86,971.62 and 40,399.68

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Solution

The fourth proportional to 63,058.60, 86,971.62 and 40,399.68 is: 55,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,058.60 : 86,971.62 = 40,399.68 : x
  2. Step 2: Convert to fraction form
    63,058.60/86,971.62 = 40,399.68/x
  3. Step 3: Cross multiply
    63,058.60x = 86,971.62 × 40,399.68
  4. Step 4: Simplify right side
    63,058.60x = 3,513,625,617.08
  5. Step 5: Solve for x
    x = 3,513,625,617.08/63,058.60
  6. Step 6: Final answer
    x = 55,720.01

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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.