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Finding the Fourth Proportional to 93,404.46, 128,917.34 and 57,112.11

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Solution

The fourth proportional to 93,404.46, 128,917.34 and 57,112.11 is: 78,826.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,404.46 : 128,917.34 = 57,112.11 : x
  2. Step 2: Convert to fraction form
    93,404.46/128,917.34 = 57,112.11/x
  3. Step 3: Cross multiply
    93,404.46x = 128,917.34 × 57,112.11
  4. Step 4: Simplify right side
    93,404.46x = 7,362,741,302.99
  5. Step 5: Solve for x
    x = 7,362,741,302.99/93,404.46
  6. Step 6: Final answer
    x = 78,826.44

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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.