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Finding the Fourth Proportional to 74,858.60, 103,304.63 and 40,867.51

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Solution

The fourth proportional to 74,858.60, 103,304.63 and 40,867.51 is: 56,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,858.60 : 103,304.63 = 40,867.51 : x
  2. Step 2: Convert to fraction form
    74,858.60/103,304.63 = 40,867.51/x
  3. Step 3: Cross multiply
    74,858.60x = 103,304.63 × 40,867.51
  4. Step 4: Simplify right side
    74,858.60x = 4,221,802,613.60
  5. Step 5: Solve for x
    x = 4,221,802,613.60/74,858.60
  6. Step 6: Final answer
    x = 56,397.03

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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.