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Finding the Fourth Proportional to 93,112, 128,494.56 and 53,368

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Solution

The fourth proportional to 93,112, 128,494.56 and 53,368 is: 73,647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,112 : 128,494.56 = 53,368 : x
  2. Step 2: Convert to fraction form
    93,112/128,494.56 = 53,368/x
  3. Step 3: Cross multiply
    93,112x = 128,494.56 × 53,368
  4. Step 4: Simplify right side
    93,112x = 6,857,497,678.08
  5. Step 5: Solve for x
    x = 6,857,497,678.08/93,112
  6. Step 6: Final answer
    x = 73,647.84

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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.