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Finding the Fourth Proportional to 93,857.51, 129,491.67 and 53,542.90

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Solution

The fourth proportional to 93,857.51, 129,491.67 and 53,542.90 is: 73,871.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,857.51 : 129,491.67 = 53,542.90 : x
  2. Step 2: Convert to fraction form
    93,857.51/129,491.67 = 53,542.90/x
  3. Step 3: Cross multiply
    93,857.51x = 129,491.67 × 53,542.90
  4. Step 4: Simplify right side
    93,857.51x = 6,933,358,890.18
  5. Step 5: Solve for x
    x = 6,933,358,890.18/93,857.51
  6. Step 6: Final answer
    x = 73,871.11

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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.