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Finding the Fourth Proportional to 93,154.05, 128,550.56 and 54,398.53

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Solution

The fourth proportional to 93,154.05, 128,550.56 and 54,398.53 is: 75,068.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,154.05 : 128,550.56 = 54,398.53 : x
  2. Step 2: Convert to fraction form
    93,154.05/128,550.56 = 54,398.53/x
  3. Step 3: Cross multiply
    93,154.05x = 128,550.56 × 54,398.53
  4. Step 4: Simplify right side
    93,154.05x = 6,992,961,383.37
  5. Step 5: Solve for x
    x = 6,992,961,383.37/93,154.05
  6. Step 6: Final answer
    x = 75,068.79

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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.