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Finding the Fourth Proportional to 93,074.52, 128,445.72 and 52,789.92

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Solution

The fourth proportional to 93,074.52, 128,445.72 and 52,789.92 is: 72,851.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,074.52 : 128,445.72 = 52,789.92 : x
  2. Step 2: Convert to fraction form
    93,074.52/128,445.72 = 52,789.92/x
  3. Step 3: Cross multiply
    93,074.52x = 128,445.72 × 52,789.92
  4. Step 4: Simplify right side
    93,074.52x = 6,780,639,283.14
  5. Step 5: Solve for x
    x = 6,780,639,283.14/93,074.52
  6. Step 6: Final answer
    x = 72,851.72

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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.