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Finding the Fourth Proportional to 74,493.80, 102,810.80 and 46,203.72

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Solution

The fourth proportional to 74,493.80, 102,810.80 and 46,203.72 is: 63,766.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,493.80 : 102,810.80 = 46,203.72 : x
  2. Step 2: Convert to fraction form
    74,493.80/102,810.80 = 46,203.72/x
  3. Step 3: Cross multiply
    74,493.80x = 102,810.80 × 46,203.72
  4. Step 4: Simplify right side
    74,493.80x = 4,750,241,416.18
  5. Step 5: Solve for x
    x = 4,750,241,416.18/74,493.80
  6. Step 6: Final answer
    x = 63,766.94

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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.