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Finding the Fourth Proportional to 93,468.14, 128,981.53 and 53,178.14

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Solution

The fourth proportional to 93,468.14, 128,981.53 and 53,178.14 is: 73,383.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,468.14 : 128,981.53 = 53,178.14 : x
  2. Step 2: Convert to fraction form
    93,468.14/128,981.53 = 53,178.14/x
  3. Step 3: Cross multiply
    93,468.14x = 128,981.53 × 53,178.14
  4. Step 4: Simplify right side
    93,468.14x = 6,858,997,081.90
  5. Step 5: Solve for x
    x = 6,858,997,081.90/93,468.14
  6. Step 6: Final answer
    x = 73,383.27

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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.