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Finding the Fourth Proportional to 93,178.50, 128,587.12 and 52,892.34

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Solution

The fourth proportional to 93,178.50, 128,587.12 and 52,892.34 is: 72,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,178.50 : 128,587.12 = 52,892.34 : x
  2. Step 2: Convert to fraction form
    93,178.50/128,587.12 = 52,892.34/x
  3. Step 3: Cross multiply
    93,178.50x = 128,587.12 × 52,892.34
  4. Step 4: Simplify right side
    93,178.50x = 6,801,273,670.66
  5. Step 5: Solve for x
    x = 6,801,273,670.66/93,178.50
  6. Step 6: Final answer
    x = 72,991.88

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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.