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Finding the Fourth Proportional to 93,251.87, 128,687.60 and 50,810.40

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Solution

The fourth proportional to 93,251.87, 128,687.60 and 50,810.40 is: 70,118.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,251.87 : 128,687.60 = 50,810.40 : x
  2. Step 2: Convert to fraction form
    93,251.87/128,687.60 = 50,810.40/x
  3. Step 3: Cross multiply
    93,251.87x = 128,687.60 × 50,810.40
  4. Step 4: Simplify right side
    93,251.87x = 6,538,668,431.04
  5. Step 5: Solve for x
    x = 6,538,668,431.04/93,251.87
  6. Step 6: Final answer
    x = 70,118.36

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1.5x scale

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.