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Finding the Fourth Proportional to 93,989.22, 129,707.69 and 53,709.54

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Solution

The fourth proportional to 93,989.22, 129,707.69 and 53,709.54 is: 74,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,989.22 : 129,707.69 = 53,709.54 : x
  2. Step 2: Convert to fraction form
    93,989.22/129,707.69 = 53,709.54/x
  3. Step 3: Cross multiply
    93,989.22x = 129,707.69 × 53,709.54
  4. Step 4: Simplify right side
    93,989.22x = 6,966,540,364.36
  5. Step 5: Solve for x
    x = 6,966,540,364.36/93,989.22
  6. Step 6: Final answer
    x = 74,120.63

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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.