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Finding the Fourth Proportional to 93,208.34, 128,644.20 and 54,965.58

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Solution

The fourth proportional to 93,208.34, 128,644.20 and 54,965.58 is: 75,862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,208.34 : 128,644.20 = 54,965.58 : x
  2. Step 2: Convert to fraction form
    93,208.34/128,644.20 = 54,965.58/x
  3. Step 3: Cross multiply
    93,208.34x = 128,644.20 × 54,965.58
  4. Step 4: Simplify right side
    93,208.34x = 7,071,003,066.64
  5. Step 5: Solve for x
    x = 7,071,003,066.64/93,208.34
  6. Step 6: Final answer
    x = 75,862.34

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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.