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Finding the Fourth Proportional to 93,464.76, 128,980.18 and 53,178.42

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Solution

The fourth proportional to 93,464.76, 128,980.18 and 53,178.42 is: 73,385.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,464.76 : 128,980.18 = 53,178.42 : x
  2. Step 2: Convert to fraction form
    93,464.76/128,980.18 = 53,178.42/x
  3. Step 3: Cross multiply
    93,464.76x = 128,980.18 × 53,178.42
  4. Step 4: Simplify right side
    93,464.76x = 6,858,962,183.72
  5. Step 5: Solve for x
    x = 6,858,962,183.72/93,464.76
  6. Step 6: Final answer
    x = 73,385.54

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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.