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Finding the Fourth Proportional to 93,287.48, 128,730.48 and 55,045.04

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Solution

The fourth proportional to 93,287.48, 128,730.48 and 55,045.04 is: 75,958.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,287.48 : 128,730.48 = 55,045.04 : x
  2. Step 2: Convert to fraction form
    93,287.48/128,730.48 = 55,045.04/x
  3. Step 3: Cross multiply
    93,287.48x = 128,730.48 × 55,045.04
  4. Step 4: Simplify right side
    93,287.48x = 7,085,974,420.82
  5. Step 5: Solve for x
    x = 7,085,974,420.82/93,287.48
  6. Step 6: Final answer
    x = 75,958.47

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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.