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Finding the Fourth Proportional to 93,368.08, 128,836.74 and 53,081.92

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Solution

The fourth proportional to 93,368.08, 128,836.74 and 53,081.92 is: 73,246.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,368.08 : 128,836.74 = 53,081.92 : x
  2. Step 2: Convert to fraction form
    93,368.08/128,836.74 = 53,081.92/x
  3. Step 3: Cross multiply
    93,368.08x = 128,836.74 × 53,081.92
  4. Step 4: Simplify right side
    93,368.08x = 6,838,901,525.74
  5. Step 5: Solve for x
    x = 6,838,901,525.74/93,368.08
  6. Step 6: Final answer
    x = 73,246.68

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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.