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Finding the Fourth Proportional to 93,224.40, 128,605.59 and 63,020.31

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Solution

The fourth proportional to 93,224.40, 128,605.59 and 63,020.31 is: 86,938.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,224.40 : 128,605.59 = 63,020.31 : x
  2. Step 2: Convert to fraction form
    93,224.40/128,605.59 = 63,020.31/x
  3. Step 3: Cross multiply
    93,224.40x = 128,605.59 × 63,020.31
  4. Step 4: Simplify right side
    93,224.40x = 8,104,764,149.53
  5. Step 5: Solve for x
    x = 8,104,764,149.53/93,224.40
  6. Step 6: Final answer
    x = 86,938.23

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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.