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Finding the Fourth Proportional to 74,850, 103,293.15 and 41,316

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Solution

The fourth proportional to 74,850, 103,293.15 and 41,316 is: 57,016.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,850 : 103,293.15 = 41,316 : x
  2. Step 2: Convert to fraction form
    74,850/103,293.15 = 41,316/x
  3. Step 3: Cross multiply
    74,850x = 103,293.15 × 41,316
  4. Step 4: Simplify right side
    74,850x = 4,267,659,785.40
  5. Step 5: Solve for x
    x = 4,267,659,785.40/74,850
  6. Step 6: Final answer
    x = 57,016.16

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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.