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Finding the Fourth Proportional to 93,900.78, 129,586.24 and 51,458.94

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Solution

The fourth proportional to 93,900.78, 129,586.24 and 51,458.94 is: 71,015.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,900.78 : 129,586.24 = 51,458.94 : x
  2. Step 2: Convert to fraction form
    93,900.78/129,586.24 = 51,458.94/x
  3. Step 3: Cross multiply
    93,900.78x = 129,586.24 × 51,458.94
  4. Step 4: Simplify right side
    93,900.78x = 6,668,370,548.99
  5. Step 5: Solve for x
    x = 6,668,370,548.99/93,900.78
  6. Step 6: Final answer
    x = 71,015.07

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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.