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Finding the Fourth Proportional to 74,652.60, 103,016.70 and 46,357.68

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Solution

The fourth proportional to 74,652.60, 103,016.70 and 46,357.68 is: 63,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,652.60 : 103,016.70 = 46,357.68 : x
  2. Step 2: Convert to fraction form
    74,652.60/103,016.70 = 46,357.68/x
  3. Step 3: Cross multiply
    74,652.60x = 103,016.70 × 46,357.68
  4. Step 4: Simplify right side
    74,652.60x = 4,775,615,213.26
  5. Step 5: Solve for x
    x = 4,775,615,213.26/74,652.60
  6. Step 6: Final answer
    x = 63,971.18

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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.