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Finding the Fourth Proportional to 93,208.61, 128,583.90 and 63,004.47

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Solution

The fourth proportional to 93,208.61, 128,583.90 and 63,004.47 is: 86,916.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,208.61 : 128,583.90 = 63,004.47 : x
  2. Step 2: Convert to fraction form
    93,208.61/128,583.90 = 63,004.47/x
  3. Step 3: Cross multiply
    93,208.61x = 128,583.90 × 63,004.47
  4. Step 4: Simplify right side
    93,208.61x = 8,101,360,470.03
  5. Step 5: Solve for x
    x = 8,101,360,470.03/93,208.61
  6. Step 6: Final answer
    x = 86,916.44

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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.