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Finding the Fourth Proportional to 93,135.79, 139,668.42 and 39,825.53

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Solution

The fourth proportional to 93,135.79, 139,668.42 and 39,825.53 is: 59,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,135.79 : 139,668.42 = 39,825.53 : x
  2. Step 2: Convert to fraction form
    93,135.79/139,668.42 = 39,825.53/x
  3. Step 3: Cross multiply
    93,135.79x = 139,668.42 × 39,825.53
  4. Step 4: Simplify right side
    93,135.79x = 5,562,369,349.28
  5. Step 5: Solve for x
    x = 5,562,369,349.28/93,135.79
  6. Step 6: Final answer
    x = 59,723.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.