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Finding the Fourth Proportional to 93,629.36, 129,208.50 and 51,187.88

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Solution

The fourth proportional to 93,629.36, 129,208.50 and 51,187.88 is: 70,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,629.36 : 129,208.50 = 51,187.88 : x
  2. Step 2: Convert to fraction form
    93,629.36/129,208.50 = 51,187.88/x
  3. Step 3: Cross multiply
    93,629.36x = 129,208.50 × 51,187.88
  4. Step 4: Simplify right side
    93,629.36x = 6,613,908,546.94
  5. Step 5: Solve for x
    x = 6,613,908,546.94/93,629.36
  6. Step 6: Final answer
    x = 70,639.26

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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.