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Finding the Fourth Proportional to 74,684.40, 103,063.17 and 40,693.17

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Solution

The fourth proportional to 74,684.40, 103,063.17 and 40,693.17 is: 56,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,684.40 : 103,063.17 = 40,693.17 : x
  2. Step 2: Convert to fraction form
    74,684.40/103,063.17 = 40,693.17/x
  3. Step 3: Cross multiply
    74,684.40x = 103,063.17 × 40,693.17
  4. Step 4: Simplify right side
    74,684.40x = 4,193,966,866.16
  5. Step 5: Solve for x
    x = 4,193,966,866.16/74,684.40
  6. Step 6: Final answer
    x = 56,155.86

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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.