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Finding the Fourth Proportional to 93,154.83, 128,570.51 and 54,912.18

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Solution

The fourth proportional to 93,154.83, 128,570.51 and 54,912.18 is: 75,788.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,154.83 : 128,570.51 = 54,912.18 : x
  2. Step 2: Convert to fraction form
    93,154.83/128,570.51 = 54,912.18/x
  3. Step 3: Cross multiply
    93,154.83x = 128,570.51 × 54,912.18
  4. Step 4: Simplify right side
    93,154.83x = 7,060,086,713.25
  5. Step 5: Solve for x
    x = 7,060,086,713.25/93,154.83
  6. Step 6: Final answer
    x = 75,788.73

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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.