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Finding the Fourth Proportional to 93,751.80, 129,374.31 and 51,309.42

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Solution

The fourth proportional to 93,751.80, 129,374.31 and 51,309.42 is: 70,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,751.80 : 129,374.31 = 51,309.42 : x
  2. Step 2: Convert to fraction form
    93,751.80/129,374.31 = 51,309.42/x
  3. Step 3: Cross multiply
    93,751.80x = 129,374.31 × 51,309.42
  4. Step 4: Simplify right side
    93,751.80x = 6,638,120,809.00
  5. Step 5: Solve for x
    x = 6,638,120,809.00/93,751.80
  6. Step 6: Final answer
    x = 70,805.26

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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.