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Finding the Fourth Proportional to 93,242.75, 139,863.08 and 55,813.28

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Solution

The fourth proportional to 93,242.75, 139,863.08 and 55,813.28 is: 83,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,242.75 : 139,863.08 = 55,813.28 : x
  2. Step 2: Convert to fraction form
    93,242.75/139,863.08 = 55,813.28/x
  3. Step 3: Cross multiply
    93,242.75x = 139,863.08 × 55,813.28
  4. Step 4: Simplify right side
    93,242.75x = 7,806,216,267.32
  5. Step 5: Solve for x
    x = 7,806,216,267.32/93,242.75
  6. Step 6: Final answer
    x = 83,719.29

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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.